periodic_table 0.1.2
periodic_table: ^0.1.2 copied to clipboard
The Periodic Table of Elements data as Dart package
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We analyzed this package on Jan 20, 2021, and awarded it 65 pub points (of a possible 110):
Follow Dart file conventions
5
/
20
0/10 points: Provide a valid pubspec.yaml
The package description is too short.
Add more detail to the description field of pubspec.yaml. Use 60 to 180 characters to describe the package, what it does, and its target use case.
5/5 points: Provide a valid README.md
0/5 points: Provide a valid CHANGELOG.md
No `CHANGELOG.md` found.
Changelog entries help developers follow the progress of your package. See the example generated by stagehand.
Provide documentation
0
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20
0/10 points: Package has an example
No example found.
See package layout guidelines on how to add an example.
0/10 points: 20% or more of the public API has dartdoc comments
- 3 out of 25 API elements (12.0 %) have documentation comments.
Providing good documentation for libraries, classes, functions, and other API elements improves code readability and helps developers find and use your API. Document at least 20% of the public API elements.
Support multiple platforms
20
/
20
20/20 points: Supports 2 of 2 possible platforms (native, js)
Pass static analysis
20
/
30
20/30 points: code has no errors, warnings, lints, or formatting issues
INFO: Avoid const keyword.
lib/src/generated/data.dart:9:23
╷
9 │ const periodicTable = const [
│ ┌───────────────────────^
10 │ │ ChemicalElement(
11 │ │ name: 'Hydrogen',
12 │ │ symbol: 'H',
13 │ │ category: 'diatomic nonmetal',
14 │ │ stpPhase: MatterPhase.gas,
15 │ │ appearance: 'colorless gas',
16 │ │ number: 1,
17 │ │ period: 1,
18 │ │ row: 1,
19 │ │ column: 1,
20 │ │ shells: [1],
21 │ │ atomicMass: 1.008,
22 │ │ molecularDensity: 0.08988,
23 │ │ heatCapacity: 28.836,
24 │ │ meltingPoint: 13.99,
25 │ │ boilingPoint: 20.271,
26 │ │ ),
27 │ │ ChemicalElement(
28 │ │ name: 'Helium',
29 │ │ symbol: 'He',
30 │ │ category: 'noble gas',
31 │ │ stpPhase: MatterPhase.gas,
32 │ │ appearance:
33 │ │ 'colorless gas, exhibiting a red-orange glow when placed in a high-voltage electric field',
34 │ │ number: 2,
35 │ │ period: 1,
36 │ │ row: 1,
37 │ │ column: 18,
38 │ │ shells: [2],
39 │ │ atomicMass: 4.0026022,
40 │ │ molecularDensity: 0.1786,
41 │ │ meltingPoint: 0.95,
42 │ │ boilingPoint: 4.222,
43 │ │ ),
44 │ │ ChemicalElement(
45 │ │ name: 'Lithium',
46 │ │ symbol: 'Li',
47 │ │ category: 'alkali metal',
48 │ │ stpPhase: MatterPhase.solid,
49 │ │ appearance: 'silvery-white',
50 │ │ number: 3,
51 │ │ period: 2,
52 │ │ row: 2,
53 │ │ column: 1,
54 │ │ shells: [2, 1],
55 │ │ atomicMass: 6.94,
56 │ │ molecularDensity: 0.534,
57 │ │ heatCapacity: 24.86,
58 │ │ meltingPoint: 453.65,
59 │ │ boilingPoint: 1603,
60 │ │ ),
61 │ │ ChemicalElement(
62 │ │ name: 'Beryllium',
63 │ │ symbol: 'Be',
64 │ │ category: 'alkaline earth metal',
65 │ │ stpPhase: MatterPhase.solid,
66 │ │ appearance: 'white-gray metallic',
67 │ │ number: 4,
68 │ │ period: 2,
69 │ │ row: 2,
70 │ │ column: 2,
71 │ │ shells: [2, 2],
72 │ │ atomicMass: 9.01218315,
73 │ │ molecularDensity: 1.85,
74 │ │ heatCapacity: 16.443,
75 │ │ meltingPoint: 1560,
76 │ │ boilingPoint: 2742,
77 │ │ ),
78 │ │ ChemicalElement(
79 │ │ name: 'Boron',
80 │ │ symbol: 'B',
81 │ │ category: 'metalloid',
82 │ │ stpPhase: MatterPhase.solid,
83 │ │ appearance: 'black-brown',
84 │ │ number: 5,
85 │ │ period: 2,
86 │ │ row: 2,
87 │ │ column: 13,
88 │ │ shells: [2, 3],
89 │ │ atomicMass: 10.81,
90 │ │ molecularDensity: 2.08,
91 │ │ heatCapacity: 11.087,
92 │ │ meltingPoint: 2349,
93 │ │ boilingPoint: 4200,
94 │ │ ),
95 │ │ ChemicalElement(
96 │ │ name: 'Carbon',
97 │ │ symbol: 'C',
98 │ │ category: 'polyatomic nonmetal',
99 │ │ stpPhase: MatterPhase.solid,
100 │ │ appearance: '',
101 │ │ number: 6,
102 │ │ period: 2,
103 │ │ row: 2,
104 │ │ column: 14,
105 │ │ shells: [2, 4],
106 │ │ atomicMass: 12.011,
107 │ │ molecularDensity: 1.821,
108 │ │ heatCapacity: 8.517,
109 │ │ ),
110 │ │ ChemicalElement(
111 │ │ name: 'Nitrogen',
112 │ │ symbol: 'N',
113 │ │ category: 'diatomic nonmetal',
114 │ │ stpPhase: MatterPhase.gas,
115 │ │ appearance: 'colorless gas, liquid or solid',
116 │ │ number: 7,
117 │ │ period: 2,
118 │ │ row: 2,
119 │ │ column: 15,
120 │ │ shells: [2, 5],
121 │ │ atomicMass: 14.007,
122 │ │ molecularDensity: 1.251,
123 │ │ meltingPoint: 63.15,
124 │ │ boilingPoint: 77.355,
125 │ │ ),
126 │ │ ChemicalElement(
127 │ │ name: 'Oxygen',
128 │ │ symbol: 'O',
129 │ │ category: 'diatomic nonmetal',
130 │ │ stpPhase: MatterPhase.gas,
131 │ │ appearance: '',
132 │ │ number: 8,
133 │ │ period: 2,
134 │ │ row: 2,
135 │ │ column: 16,
136 │ │ shells: [2, 6],
137 │ │ atomicMass: 15.999,
138 │ │ molecularDensity: 1.429,
139 │ │ meltingPoint: 54.36,
140 │ │ boilingPoint: 90.188,
141 │ │ ),
142 │ │ ChemicalElement(
143 │ │ name: 'Fluorine',
144 │ │ symbol: 'F',
145 │ │ category: 'diatomic nonmetal',
146 │ │ stpPhase: MatterPhase.gas,
147 │ │ appearance: '',
148 │ │ number: 9,
149 │ │ period: 2,
150 │ │ row: 2,
151 │ │ column: 17,
152 │ │ shells: [2, 7],
153 │ │ atomicMass: 18.9984031636,
154 │ │ molecularDensity: 1.696,
155 │ │ meltingPoint: 53.48,
156 │ │ boilingPoint: 85.03,
157 │ │ ),
158 │ │ ChemicalElement(
159 │ │ name: 'Neon',
160 │ │ symbol: 'Ne',
161 │ │ category: 'noble gas',
162 │ │ stpPhase: MatterPhase.gas,
163 │ │ appearance:
164 │ │ 'colorless gas exhibiting an orange-red glow when placed in a high voltage electric field',
165 │ │ number: 10,
166 │ │ period: 2,
167 │ │ row: 2,
168 │ │ column: 18,
169 │ │ shells: [2, 8],
170 │ │ atomicMass: 20.17976,
171 │ │ molecularDensity: 0.9002,
172 │ │ meltingPoint: 24.56,
173 │ │ boilingPoint: 27.104,
174 │ │ ),
175 │ │ ChemicalElement(
176 │ │ name: 'Sodium',
177 │ │ symbol: 'Na',
178 │ │ category: 'alkali metal',
179 │ │ stpPhase: MatterPhase.solid,
180 │ │ appearance: 'silvery white metallic',
181 │ │ number: 11,
182 │ │ period: 3,
183 │ │ row: 3,
184 │ │ column: 1,
185 │ │ shells: [2, 8, 1],
186 │ │ atomicMass: 22.989769282,
187 │ │ molecularDensity: 0.968,
188 │ │ heatCapacity: 28.23,
189 │ │ meltingPoint: 370.944,
190 │ │ boilingPoint: 1156.09,
191 │ │ ),
192 │ │ ChemicalElement(
193 │ │ name: 'Magnesium',
194 │ │ symbol: 'Mg',
195 │ │ category: 'alkaline earth metal',
196 │ │ stpPhase: MatterPhase.solid,
197 │ │ appearance: 'shiny grey solid',
198 │ │ number: 12,
199 │ │ period: 3,
200 │ │ row: 3,
201 │ │ column: 2,
202 │ │ shells: [2, 8, 2],
203 │ │ atomicMass: 24.305,
204 │ │ molecularDensity: 1.738,
205 │ │ heatCapacity: 24.869,
206 │ │ meltingPoint: 923,
207 │ │ boilingPoint: 1363,
208 │ │ ),
209 │ │ ChemicalElement(
210 │ │ name: 'Aluminium',
211 │ │ symbol: 'Al',
212 │ │ category: 'post-transition metal',
213 │ │ stpPhase: MatterPhase.solid,
214 │ │ appearance: 'silvery gray metallic',
215 │ │ number: 13,
216 │ │ period: 3,
217 │ │ row: 3,
218 │ │ column: 13,
219 │ │ shells: [2, 8, 3],
220 │ │ atomicMass: 26.98153857,
221 │ │ molecularDensity: 2.7,
222 │ │ heatCapacity: 24.2,
223 │ │ meltingPoint: 933.47,
224 │ │ boilingPoint: 2743,
225 │ │ ),
226 │ │ ChemicalElement(
227 │ │ name: 'Silicon',
228 │ │ symbol: 'Si',
229 │ │ category: 'metalloid',
230 │ │ stpPhase: MatterPhase.solid,
231 │ │ appearance: 'crystalline, reflective with bluish-tinged faces',
232 │ │ number: 14,
233 │ │ period: 3,
234 │ │ row: 3,
235 │ │ column: 14,
236 │ │ shells: [2, 8, 4],
237 │ │ atomicMass: 28.085,
238 │ │ molecularDensity: 2.329,
239 │ │ heatCapacity: 19.789,
240 │ │ meltingPoint: 1687,
241 │ │ boilingPoint: 3538,
242 │ │ ),
243 │ │ ChemicalElement(
244 │ │ name: 'Phosphorus',
245 │ │ symbol: 'P',
246 │ │ category: 'polyatomic nonmetal',
247 │ │ stpPhase: MatterPhase.solid,
248 │ │ appearance: 'colourless, waxy white, yellow, scarlet, red, violet, black',
249 │ │ number: 15,
250 │ │ period: 3,
251 │ │ row: 3,
252 │ │ column: 15,
253 │ │ shells: [2, 8, 5],
254 │ │ atomicMass: 30.9737619985,
255 │ │ molecularDensity: 1.823,
256 │ │ heatCapacity: 23.824,
257 │ │ ),
258 │ │ ChemicalElement(
259 │ │ name: 'Sulfur',
260 │ │ symbol: 'S',
261 │ │ category: 'polyatomic nonmetal',
262 │ │ stpPhase: MatterPhase.solid,
263 │ │ appearance: 'lemon yellow sintered microcrystals',
264 │ │ number: 16,
265 │ │ period: 3,
266 │ │ row: 3,
267 │ │ column: 16,
268 │ │ shells: [2, 8, 6],
269 │ │ atomicMass: 32.06,
270 │ │ molecularDensity: 2.07,
271 │ │ heatCapacity: 22.75,
272 │ │ meltingPoint: 388.36,
273 │ │ boilingPoint: 717.8,
274 │ │ ),
275 │ │ ChemicalElement(
276 │ │ name: 'Chlorine',
277 │ │ symbol: 'Cl',
278 │ │ category: 'diatomic nonmetal',
279 │ │ stpPhase: MatterPhase.gas,
280 │ │ appearance: 'pale yellow-green gas',
281 │ │ number: 17,
282 │ │ period: 3,
283 │ │ row: 3,
284 │ │ column: 17,
285 │ │ shells: [2, 8, 7],
286 │ │ atomicMass: 35.45,
287 │ │ molecularDensity: 3.2,
288 │ │ meltingPoint: 171.6,
289 │ │ boilingPoint: 239.11,
290 │ │ ),
291 │ │ ChemicalElement(
292 │ │ name: 'Argon',
293 │ │ symbol: 'Ar',
294 │ │ category: 'noble gas',
295 │ │ stpPhase: MatterPhase.gas,
296 │ │ appearance:
297 │ │ 'colorless gas exhibiting a lilac/violet glow when placed in a high voltage electric field',
298 │ │ number: 18,
299 │ │ period: 3,
300 │ │ row: 3,
301 │ │ column: 18,
302 │ │ shells: [2, 8, 8],
303 │ │ atomicMass: 39.9481,
304 │ │ molecularDensity: 1.784,
305 │ │ meltingPoint: 83.81,
306 │ │ boilingPoint: 87.302,
307 │ │ ),
308 │ │ ChemicalElement(
309 │ │ name: 'Potassium',
310 │ │ symbol: 'K',
311 │ │ category: 'alkali metal',
312 │ │ stpPhase: MatterPhase.solid,
313 │ │ appearance: 'silvery gray',
314 │ │ number: 19,
315 │ │ period: 4,
316 │ │ row: 4,
317 │ │ column: 1,
318 │ │ shells: [2, 8, 8, 1],
319 │ │ atomicMass: 39.09831,
320 │ │ molecularDensity: 0.862,
321 │ │ heatCapacity: 29.6,
322 │ │ meltingPoint: 336.7,
323 │ │ boilingPoint: 1032,
324 │ │ ),
325 │ │ ChemicalElement(
326 │ │ name: 'Calcium',
327 │ │ symbol: 'Ca',
328 │ │ category: 'alkaline earth metal',
329 │ │ stpPhase: MatterPhase.solid,
330 │ │ appearance: '',
331 │ │ number: 20,
332 │ │ period: 4,
333 │ │ row: 4,
334 │ │ column: 2,
335 │ │ shells: [2, 8, 8, 2],
336 │ │ atomicMass: 40.0784,
337 │ │ molecularDensity: 1.55,
338 │ │ heatCapacity: 25.929,
339 │ │ meltingPoint: 1115,
340 │ │ boilingPoint: 1757,
341 │ │ ),
342 │ │ ChemicalElement(
343 │ │ name: 'Scandium',
344 │ │ symbol: 'Sc',
345 │ │ category: 'transition metal',
346 │ │ stpPhase: MatterPhase.solid,
347 │ │ appearance: 'silvery white',
348 │ │ number: 21,
349 │ │ period: 4,
350 │ │ row: 4,
351 │ │ column: 3,
352 │ │ shells: [2, 8, 9, 2],
353 │ │ atomicMass: 44.9559085,
354 │ │ molecularDensity: 2.985,
355 │ │ heatCapacity: 25.52,
356 │ │ meltingPoint: 1814,
357 │ │ boilingPoint: 3109,
358 │ │ ),
359 │ │ ChemicalElement(
360 │ │ name: 'Titanium',
361 │ │ symbol: 'Ti',
362 │ │ category: 'transition metal',
363 │ │ stpPhase: MatterPhase.solid,
364 │ │ appearance: 'silvery grey-white metallic',
365 │ │ number: 22,
366 │ │ period: 4,
367 │ │ row: 4,
368 │ │ column: 4,
369 │ │ shells: [2, 8, 10, 2],
370 │ │ atomicMass: 47.8671,
371 │ │ molecularDensity: 4.506,
372 │ │ heatCapacity: 25.06,
373 │ │ meltingPoint: 1941,
374 │ │ boilingPoint: 3560,
375 │ │ ),
376 │ │ ChemicalElement(
377 │ │ name: 'Vanadium',
378 │ │ symbol: 'V',
379 │ │ category: 'transition metal',
380 │ │ stpPhase: MatterPhase.solid,
381 │ │ appearance: 'blue-silver-grey metal',
382 │ │ number: 23,
383 │ │ period: 4,
384 │ │ row: 4,
385 │ │ column: 5,
386 │ │ shells: [2, 8, 11, 2],
387 │ │ atomicMass: 50.94151,
388 │ │ molecularDensity: 6,
389 │ │ heatCapacity: 24.89,
390 │ │ meltingPoint: 2183,
391 │ │ boilingPoint: 3680,
392 │ │ ),
393 │ │ ChemicalElement(
394 │ │ name: 'Chromium',
395 │ │ symbol: 'Cr',
396 │ │ category: 'transition metal',
397 │ │ stpPhase: MatterPhase.solid,
398 │ │ appearance: 'silvery metallic',
399 │ │ number: 24,
400 │ │ period: 4,
401 │ │ row: 4,
402 │ │ column: 6,
403 │ │ shells: [2, 8, 13, 1],
404 │ │ atomicMass: 51.99616,
405 │ │ molecularDensity: 7.19,
406 │ │ heatCapacity: 23.35,
407 │ │ meltingPoint: 2180,
408 │ │ boilingPoint: 2944,
409 │ │ ),
410 │ │ ChemicalElement(
411 │ │ name: 'Manganese',
412 │ │ symbol: 'Mn',
413 │ │ category: 'transition metal',
414 │ │ stpPhase: MatterPhase.solid,
415 │ │ appearance: 'silvery metallic',
416 │ │ number: 25,
417 │ │ period: 4,
418 │ │ row: 4,
419 │ │ column: 7,
420 │ │ shells: [2, 8, 13, 2],
421 │ │ atomicMass: 54.9380443,
422 │ │ molecularDensity: 7.21,
423 │ │ heatCapacity: 26.32,
424 │ │ meltingPoint: 1519,
425 │ │ boilingPoint: 2334,
426 │ │ ),
427 │ │ ChemicalElement(
428 │ │ name: 'Iron',
429 │ │ symbol: 'Fe',
430 │ │ category: 'transition metal',
431 │ │ stpPhase: MatterPhase.solid,
432 │ │ appearance: 'lustrous metallic with a grayish tinge',
433 │ │ number: 26,
434 │ │ period: 4,
435 │ │ row: 4,
436 │ │ column: 8,
437 │ │ shells: [2, 8, 14, 2],
438 │ │ atomicMass: 55.8452,
439 │ │ molecularDensity: 7.874,
440 │ │ heatCapacity: 25.1,
441 │ │ meltingPoint: 1811,
442 │ │ boilingPoint: 3134,
443 │ │ ),
444 │ │ ChemicalElement(
445 │ │ name: 'Cobalt',
446 │ │ symbol: 'Co',
447 │ │ category: 'transition metal',
448 │ │ stpPhase: MatterPhase.solid,
449 │ │ appearance: 'hard lustrous gray metal',
450 │ │ number: 27,
451 │ │ period: 4,
452 │ │ row: 4,
453 │ │ column: 9,
454 │ │ shells: [2, 8, 15, 2],
455 │ │ atomicMass: 58.9331944,
456 │ │ molecularDensity: 8.9,
457 │ │ heatCapacity: 24.81,
458 │ │ meltingPoint: 1768,
459 │ │ boilingPoint: 3200,
460 │ │ ),
461 │ │ ChemicalElement(
462 │ │ name: 'Nickel',
463 │ │ symbol: 'Ni',
464 │ │ category: 'transition metal',
465 │ │ stpPhase: MatterPhase.solid,
466 │ │ appearance: 'lustrous, metallic, and silver with a gold tinge',
467 │ │ number: 28,
468 │ │ period: 4,
469 │ │ row: 4,
470 │ │ column: 10,
471 │ │ shells: [2, 8, 16, 2],
472 │ │ atomicMass: 58.69344,
473 │ │ molecularDensity: 8.908,
474 │ │ heatCapacity: 26.07,
475 │ │ meltingPoint: 1728,
476 │ │ boilingPoint: 3003,
477 │ │ ),
478 │ │ ChemicalElement(
479 │ │ name: 'Copper',
480 │ │ symbol: 'Cu',
481 │ │ category: 'transition metal',
482 │ │ stpPhase: MatterPhase.solid,
483 │ │ appearance: 'red-orange metallic luster',
484 │ │ number: 29,
485 │ │ period: 4,
486 │ │ row: 4,
487 │ │ column: 11,
488 │ │ shells: [2, 8, 18, 1],
489 │ │ atomicMass: 63.5463,
490 │ │ molecularDensity: 8.96,
491 │ │ heatCapacity: 24.44,
492 │ │ meltingPoint: 1357.77,
493 │ │ boilingPoint: 2835,
494 │ │ ),
495 │ │ ChemicalElement(
496 │ │ name: 'Zinc',
497 │ │ symbol: 'Zn',
498 │ │ category: 'transition metal',
499 │ │ stpPhase: MatterPhase.solid,
500 │ │ appearance: 'silver-gray',
501 │ │ number: 30,
502 │ │ period: 4,
503 │ │ row: 4,
504 │ │ column: 12,
505 │ │ shells: [2, 8, 18, 2],
506 │ │ atomicMass: 65.382,
507 │ │ molecularDensity: 7.14,
508 │ │ heatCapacity: 25.47,
509 │ │ meltingPoint: 692.68,
510 │ │ boilingPoint: 1180,
511 │ │ ),
512 │ │ ChemicalElement(
513 │ │ name: 'Gallium',
514 │ │ symbol: 'Ga',
515 │ │ category: 'post-transition metal',
516 │ │ stpPhase: MatterPhase.solid,
517 │ │ appearance: 'silver-white',
518 │ │ number: 31,
519 │ │ period: 4,
520 │ │ row: 4,
521 │ │ column: 13,
522 │ │ shells: [2, 8, 18, 3],
523 │ │ atomicMass: 69.7231,
524 │ │ molecularDensity: 5.91,
525 │ │ heatCapacity: 25.86,
526 │ │ meltingPoint: 302.9146,
527 │ │ boilingPoint: 2673,
528 │ │ ),
529 │ │ ChemicalElement(
530 │ │ name: 'Germanium',
531 │ │ symbol: 'Ge',
532 │ │ category: 'metalloid',
533 │ │ stpPhase: MatterPhase.solid,
534 │ │ appearance: 'grayish-white',
535 │ │ number: 32,
536 │ │ period: 4,
537 │ │ row: 4,
538 │ │ column: 14,
539 │ │ shells: [2, 8, 18, 4],
540 │ │ atomicMass: 72.6308,
541 │ │ molecularDensity: 5.323,
542 │ │ heatCapacity: 23.222,
543 │ │ meltingPoint: 1211.4,
544 │ │ boilingPoint: 3106,
545 │ │ ),
546 │ │ ChemicalElement(
547 │ │ name: 'Arsenic',
548 │ │ symbol: 'As',
549 │ │ category: 'metalloid',
550 │ │ stpPhase: MatterPhase.solid,
551 │ │ appearance: 'metallic grey',
552 │ │ number: 33,
553 │ │ period: 4,
554 │ │ row: 4,
555 │ │ column: 15,
556 │ │ shells: [2, 8, 18, 5],
557 │ │ atomicMass: 74.9215956,
558 │ │ molecularDensity: 5.727,
559 │ │ heatCapacity: 24.64,
560 │ │ ),
561 │ │ ChemicalElement(
562 │ │ name: 'Selenium',
563 │ │ symbol: 'Se',
564 │ │ category: 'polyatomic nonmetal',
565 │ │ stpPhase: MatterPhase.solid,
566 │ │ appearance: 'black, red, and gray (not pictured) allotropes',
567 │ │ number: 34,
568 │ │ period: 4,
569 │ │ row: 4,
570 │ │ column: 16,
571 │ │ shells: [2, 8, 18, 6],
572 │ │ atomicMass: 78.9718,
573 │ │ molecularDensity: 4.81,
574 │ │ heatCapacity: 25.363,
575 │ │ meltingPoint: 494,
576 │ │ boilingPoint: 958,
577 │ │ ),
578 │ │ ChemicalElement(
579 │ │ name: 'Bromine',
580 │ │ symbol: 'Br',
581 │ │ category: 'diatomic nonmetal',
582 │ │ stpPhase: MatterPhase.liquid,
583 │ │ appearance: '',
584 │ │ number: 35,
585 │ │ period: 4,
586 │ │ row: 4,
587 │ │ column: 17,
588 │ │ shells: [2, 8, 18, 7],
589 │ │ atomicMass: 79.904,
590 │ │ molecularDensity: 23.1028,
591 │ │ meltingPoint: 265.8,
592 │ │ boilingPoint: 332,
593 │ │ ),
594 │ │ ChemicalElement(
595 │ │ name: 'Krypton',
596 │ │ symbol: 'Kr',
597 │ │ category: 'noble gas',
598 │ │ stpPhase: MatterPhase.gas,
599 │ │ appearance:
600 │ │ 'colorless gas, exhibiting a whitish glow in a high electric field',
601 │ │ number: 36,
602 │ │ period: 4,
603 │ │ row: 4,
604 │ │ column: 18,
605 │ │ shells: [2, 8, 18, 8],
606 │ │ atomicMass: 83.7982,
607 │ │ molecularDensity: 3.749,
608 │ │ meltingPoint: 115.78,
609 │ │ boilingPoint: 119.93,
610 │ │ ),
611 │ │ ChemicalElement(
612 │ │ name: 'Rubidium',
613 │ │ symbol: 'Rb',
614 │ │ category: 'alkali metal',
615 │ │ stpPhase: MatterPhase.solid,
616 │ │ appearance: 'grey white',
617 │ │ number: 37,
618 │ │ period: 5,
619 │ │ row: 5,
620 │ │ column: 1,
621 │ │ shells: [2, 8, 18, 8, 1],
622 │ │ atomicMass: 85.46783,
623 │ │ molecularDensity: 1.532,
624 │ │ heatCapacity: 31.06,
625 │ │ meltingPoint: 312.45,
626 │ │ boilingPoint: 961,
627 │ │ ),
628 │ │ ChemicalElement(
629 │ │ name: 'Strontium',
630 │ │ symbol: 'Sr',
631 │ │ category: 'alkaline earth metal',
632 │ │ stpPhase: MatterPhase.solid,
633 │ │ appearance: '',
634 │ │ number: 38,
635 │ │ period: 5,
636 │ │ row: 5,
637 │ │ column: 2,
638 │ │ shells: [2, 8, 18, 8, 2],
639 │ │ atomicMass: 87.621,
640 │ │ molecularDensity: 2.64,
641 │ │ heatCapacity: 26.4,
642 │ │ meltingPoint: 1050,
643 │ │ boilingPoint: 1650,
644 │ │ ),
645 │ │ ChemicalElement(
646 │ │ name: 'Yttrium',
647 │ │ symbol: 'Y',
648 │ │ category: 'transition metal',
649 │ │ stpPhase: MatterPhase.solid,
650 │ │ appearance: 'silvery white',
651 │ │ number: 39,
652 │ │ period: 5,
653 │ │ row: 5,
654 │ │ column: 3,
655 │ │ shells: [2, 8, 18, 9, 2],
656 │ │ atomicMass: 88.905842,
657 │ │ molecularDensity: 4.472,
658 │ │ heatCapacity: 26.53,
659 │ │ meltingPoint: 1799,
660 │ │ boilingPoint: 3203,
661 │ │ ),
662 │ │ ChemicalElement(
663 │ │ name: 'Zirconium',
664 │ │ symbol: 'Zr',
665 │ │ category: 'transition metal',
666 │ │ stpPhase: MatterPhase.solid,
667 │ │ appearance: 'silvery white',
668 │ │ number: 40,
669 │ │ period: 5,
670 │ │ row: 5,
671 │ │ column: 4,
672 │ │ shells: [2, 8, 18, 10, 2],
673 │ │ atomicMass: 91.2242,
674 │ │ molecularDensity: 6.52,
675 │ │ heatCapacity: 25.36,
676 │ │ meltingPoint: 2128,
677 │ │ boilingPoint: 4650,
678 │ │ ),
679 │ │ ChemicalElement(
680 │ │ name: 'Niobium',
681 │ │ symbol: 'Nb',
682 │ │ category: 'transition metal',
683 │ │ stpPhase: MatterPhase.solid,
684 │ │ appearance: 'gray metallic, bluish when oxidized',
685 │ │ number: 41,
686 │ │ period: 5,
687 │ │ row: 5,
688 │ │ column: 5,
689 │ │ shells: [2, 8, 18, 12, 1],
690 │ │ atomicMass: 92.906372,
691 │ │ molecularDensity: 8.57,
692 │ │ heatCapacity: 24.6,
693 │ │ meltingPoint: 2750,
694 │ │ boilingPoint: 5017,
695 │ │ ),
696 │ │ ChemicalElement(
697 │ │ name: 'Molybdenum',
698 │ │ symbol: 'Mo',
699 │ │ category: 'transition metal',
700 │ │ stpPhase: MatterPhase.solid,
701 │ │ appearance: 'gray metallic',
702 │ │ number: 42,
703 │ │ period: 5,
704 │ │ row: 5,
705 │ │ column: 6,
706 │ │ shells: [2, 8, 18, 13, 1],
707 │ │ atomicMass: 95.951,
708 │ │ molecularDensity: 10.28,
709 │ │ heatCapacity: 24.06,
710 │ │ meltingPoint: 2896,
711 │ │ boilingPoint: 4912,
712 │ │ ),
713 │ │ ChemicalElement(
714 │ │ name: 'Technetium',
715 │ │ symbol: 'Tc',
716 │ │ category: 'transition metal',
717 │ │ stpPhase: MatterPhase.solid,
718 │ │ appearance: 'shiny gray metal',
719 │ │ number: 43,
720 │ │ period: 5,
721 │ │ row: 5,
722 │ │ column: 7,
723 │ │ shells: [2, 8, 18, 13, 2],
724 │ │ atomicMass: 98,
725 │ │ molecularDensity: 11,
726 │ │ heatCapacity: 24.27,
727 │ │ meltingPoint: 2430,
728 │ │ boilingPoint: 4538,
729 │ │ ),
730 │ │ ChemicalElement(
731 │ │ name: 'Ruthenium',
732 │ │ symbol: 'Ru',
733 │ │ category: 'transition metal',
734 │ │ stpPhase: MatterPhase.solid,
735 │ │ appearance: 'silvery white metallic',
736 │ │ number: 44,
737 │ │ period: 5,
738 │ │ row: 5,
739 │ │ column: 8,
740 │ │ shells: [2, 8, 18, 15, 1],
741 │ │ atomicMass: 101.072,
742 │ │ molecularDensity: 12.45,
743 │ │ heatCapacity: 24.06,
744 │ │ meltingPoint: 2607,
745 │ │ boilingPoint: 4423,
746 │ │ ),
747 │ │ ChemicalElement(
748 │ │ name: 'Rhodium',
749 │ │ symbol: 'Rh',
750 │ │ category: 'transition metal',
751 │ │ stpPhase: MatterPhase.solid,
752 │ │ appearance: 'silvery white metallic',
753 │ │ number: 45,
754 │ │ period: 5,
755 │ │ row: 5,
756 │ │ column: 9,
757 │ │ shells: [2, 8, 18, 16, 1],
758 │ │ atomicMass: 102.905502,
759 │ │ molecularDensity: 12.41,
760 │ │ heatCapacity: 24.98,
761 │ │ meltingPoint: 2237,
762 │ │ boilingPoint: 3968,
763 │ │ ),
764 │ │ ChemicalElement(
765 │ │ name: 'Palladium',
766 │ │ symbol: 'Pd',
767 │ │ category: 'transition metal',
768 │ │ stpPhase: MatterPhase.solid,
769 │ │ appearance: 'silvery white',
770 │ │ number: 46,
771 │ │ period: 5,
772 │ │ row: 5,
773 │ │ column: 10,
774 │ │ shells: [2, 8, 18, 18],
775 │ │ atomicMass: 106.421,
776 │ │ molecularDensity: 12.023,
777 │ │ heatCapacity: 25.98,
778 │ │ meltingPoint: 1828.05,
779 │ │ boilingPoint: 3236,
780 │ │ ),
781 │ │ ChemicalElement(
782 │ │ name: 'Silver',
783 │ │ symbol: 'Ag',
784 │ │ category: 'transition metal',
785 │ │ stpPhase: MatterPhase.solid,
786 │ │ appearance: 'lustrous white metal',
787 │ │ number: 47,
788 │ │ period: 5,
789 │ │ row: 5,
790 │ │ column: 11,
791 │ │ shells: [2, 8, 18, 18, 1],
792 │ │ atomicMass: 107.86822,
793 │ │ molecularDensity: 10.49,
794 │ │ heatCapacity: 25.35,
795 │ │ meltingPoint: 1234.93,
796 │ │ boilingPoint: 2435,
797 │ │ ),
798 │ │ ChemicalElement(
799 │ │ name: 'Cadmium',
800 │ │ symbol: 'Cd',
801 │ │ category: 'transition metal',
802 │ │ stpPhase: MatterPhase.solid,
803 │ │ appearance: 'silvery bluish-gray metallic',
804 │ │ number: 48,
805 │ │ period: 5,
806 │ │ row: 5,
807 │ │ column: 12,
808 │ │ shells: [2, 8, 18, 18, 2],
809 │ │ atomicMass: 112.4144,
810 │ │ molecularDensity: 8.65,
811 │ │ heatCapacity: 26.02,
812 │ │ meltingPoint: 594.22,
813 │ │ boilingPoint: 1040,
814 │ │ ),
815 │ │ ChemicalElement(
816 │ │ name: 'Indium',
817 │ │ symbol: 'In',
818 │ │ category: 'post-transition metal',
819 │ │ stpPhase: MatterPhase.solid,
820 │ │ appearance: 'silvery lustrous gray',
821 │ │ number: 49,
822 │ │ period: 5,
823 │ │ row: 5,
824 │ │ column: 13,
825 │ │ shells: [2, 8, 18, 18, 3],
826 │ │ atomicMass: 114.8181,
827 │ │ molecularDensity: 7.31,
828 │ │ heatCapacity: 26.74,
829 │ │ meltingPoint: 429.7485,
830 │ │ boilingPoint: 2345,
831 │ │ ),
832 │ │ ChemicalElement(
833 │ │ name: 'Tin',
834 │ │ symbol: 'Sn',
835 │ │ category: 'post-transition metal',
836 │ │ stpPhase: MatterPhase.solid,
837 │ │ appearance: 'silvery-white (beta, β) or gray (alpha, α)',
838 │ │ number: 50,
839 │ │ period: 5,
840 │ │ row: 5,
841 │ │ column: 14,
842 │ │ shells: [2, 8, 18, 18, 4],
843 │ │ atomicMass: 118.7107,
844 │ │ molecularDensity: 7.365,
845 │ │ heatCapacity: 27.112,
846 │ │ meltingPoint: 505.08,
847 │ │ boilingPoint: 2875,
848 │ │ ),
849 │ │ ChemicalElement(
850 │ │ name: 'Antimony',
851 │ │ symbol: 'Sb',
852 │ │ category: 'metalloid',
853 │ │ stpPhase: MatterPhase.solid,
854 │ │ appearance: 'silvery lustrous gray',
855 │ │ number: 51,
856 │ │ period: 5,
857 │ │ row: 5,
858 │ │ column: 15,
859 │ │ shells: [2, 8, 18, 18, 5],
860 │ │ atomicMass: 121.7601,
861 │ │ molecularDensity: 6.697,
862 │ │ heatCapacity: 25.23,
863 │ │ meltingPoint: 903.78,
864 │ │ boilingPoint: 1908,
865 │ │ ),
866 │ │ ChemicalElement(
867 │ │ name: 'Tellurium',
868 │ │ symbol: 'Te',
869 │ │ category: 'metalloid',
870 │ │ stpPhase: MatterPhase.solid,
871 │ │ appearance: '',
872 │ │ number: 52,
873 │ │ period: 5,
874 │ │ row: 5,
875 │ │ column: 16,
876 │ │ shells: [2, 8, 18, 18, 6],
877 │ │ atomicMass: 127.603,
878 │ │ molecularDensity: 6.24,
879 │ │ heatCapacity: 25.73,
880 │ │ meltingPoint: 722.66,
881 │ │ boilingPoint: 1261,
882 │ │ ),
883 │ │ ChemicalElement(
884 │ │ name: 'Iodine',
885 │ │ symbol: 'I',
886 │ │ category: 'diatomic nonmetal',
887 │ │ stpPhase: MatterPhase.solid,
888 │ │ appearance: 'lustrous metallic gray, violet as a gas',
889 │ │ number: 53,
890 │ │ period: 5,
891 │ │ row: 5,
892 │ │ column: 17,
893 │ │ shells: [2, 8, 18, 18, 7],
894 │ │ atomicMass: 126.904473,
895 │ │ molecularDensity: 4.933,
896 │ │ meltingPoint: 386.85,
897 │ │ boilingPoint: 457.4,
898 │ │ ),
899 │ │ ChemicalElement(
900 │ │ name: 'Xenon',
901 │ │ symbol: 'Xe',
902 │ │ category: 'noble gas',
903 │ │ stpPhase: MatterPhase.gas,
904 │ │ appearance:
905 │ │ 'colorless gas, exhibiting a blue glow when placed in a high voltage electric field',
906 │ │ number: 54,
907 │ │ period: 5,
908 │ │ row: 5,
909 │ │ column: 18,
910 │ │ shells: [2, 8, 18, 18, 8],
911 │ │ atomicMass: 131.2936,
912 │ │ molecularDensity: 5.894,
913 │ │ meltingPoint: 161.4,
914 │ │ boilingPoint: 165.051,
915 │ │ ),
916 │ │ ChemicalElement(
917 │ │ name: 'Cesium',
918 │ │ symbol: 'Cs',
919 │ │ category: 'alkali metal',
920 │ │ stpPhase: MatterPhase.solid,
921 │ │ appearance: 'silvery gold',
922 │ │ number: 55,
923 │ │ period: 6,
924 │ │ row: 6,
925 │ │ column: 1,
926 │ │ shells: [2, 8, 18, 18, 8, 1],
927 │ │ atomicMass: 132.905451966,
928 │ │ molecularDensity: 1.93,
929 │ │ heatCapacity: 32.21,
930 │ │ meltingPoint: 301.7,
931 │ │ boilingPoint: 944,
932 │ │ ),
933 │ │ ChemicalElement(
934 │ │ name: 'Barium',
935 │ │ symbol: 'Ba',
936 │ │ category: 'alkaline earth metal',
937 │ │ stpPhase: MatterPhase.solid,
938 │ │ appearance: '',
939 │ │ number: 56,
940 │ │ period: 6,
941 │ │ row: 6,
942 │ │ column: 2,
943 │ │ shells: [2, 8, 18, 18, 8, 2],
944 │ │ atomicMass: 137.3277,
945 │ │ molecularDensity: 3.51,
946 │ │ heatCapacity: 28.07,
947 │ │ meltingPoint: 1000,
948 │ │ boilingPoint: 2118,
949 │ │ ),
950 │ │ ChemicalElement(
951 │ │ name: 'Lanthanum',
952 │ │ symbol: 'La',
953 │ │ category: 'lanthanide',
954 │ │ stpPhase: MatterPhase.solid,
955 │ │ appearance: 'silvery white',
956 │ │ number: 57,
957 │ │ period: 6,
958 │ │ row: 9,
959 │ │ column: 3,
960 │ │ shells: [2, 8, 18, 18, 9, 2],
961 │ │ atomicMass: 138.905477,
962 │ │ molecularDensity: 6.162,
963 │ │ heatCapacity: 27.11,
964 │ │ meltingPoint: 1193,
965 │ │ boilingPoint: 3737,
966 │ │ ),
967 │ │ ChemicalElement(
968 │ │ name: 'Cerium',
969 │ │ symbol: 'Ce',
970 │ │ category: 'lanthanide',
971 │ │ stpPhase: MatterPhase.solid,
972 │ │ appearance: 'silvery white',
973 │ │ number: 58,
974 │ │ period: 6,
975 │ │ row: 9,
976 │ │ column: 4,
977 │ │ shells: [2, 8, 18, 19, 9, 2],
978 │ │ atomicMass: 140.1161,
979 │ │ molecularDensity: 6.77,
980 │ │ heatCapacity: 26.94,
981 │ │ meltingPoint: 1068,
982 │ │ boilingPoint: 3716,
983 │ │ ),
984 │ │ ChemicalElement(
985 │ │ name: 'Praseodymium',
986 │ │ symbol: 'Pr',
987 │ │ category: 'lanthanide',
988 │ │ stpPhase: MatterPhase.solid,
989 │ │ appearance: 'grayish white',
990 │ │ number: 59,
991 │ │ period: 6,
992 │ │ row: 9,
993 │ │ column: 5,
994 │ │ shells: [2, 8, 18, 21, 8, 2],
995 │ │ atomicMass: 140.907662,
996 │ │ molecularDensity: 6.77,
997 │ │ heatCapacity: 27.2,
998 │ │ meltingPoint: 1208,
999 │ │ boilingPoint: 3403,
1000 │ │ ),
1001 │ │ ChemicalElement(
1002 │ │ name: 'Neodymium',
1003 │ │ symbol: 'Nd',
1004 │ │ category: 'lanthanide',
1005 │ │ stpPhase: MatterPhase.solid,
1006 │ │ appearance: 'silvery white',
1007 │ │ number: 60,
1008 │ │ period: 6,
1009 │ │ row: 9,
1010 │ │ column: 6,
1011 │ │ shells: [2, 8, 18, 22, 8, 2],
1012 │ │ atomicMass: 144.2423,
1013 │ │ molecularDensity: 7.01,
1014 │ │ heatCapacity: 27.45,
1015 │ │ meltingPoint: 1297,
1016 │ │ boilingPoint: 3347,
1017 │ │ ),
1018 │ │ ChemicalElement(
1019 │ │ name: 'Promethium',
1020 │ │ symbol: 'Pm',
1021 │ │ category: 'lanthanide',
1022 │ │ stpPhase: MatterPhase.solid,
1023 │ │ appearance: 'metallic',
1024 │ │ number: 61,
1025 │ │ period: 6,
1026 │ │ row: 9,
1027 │ │ column: 7,
1028 │ │ shells: [2, 8, 18, 23, 8, 2],
1029 │ │ atomicMass: 145,
1030 │ │ molecularDensity: 7.26,
1031 │ │ meltingPoint: 1315,
1032 │ │ boilingPoint: 3273,
1033 │ │ ),
1034 │ │ ChemicalElement(
1035 │ │ name: 'Samarium',
1036 │ │ symbol: 'Sm',
1037 │ │ category: 'lanthanide',
1038 │ │ stpPhase: MatterPhase.solid,
1039 │ │ appearance: 'silvery white',
1040 │ │ number: 62,
1041 │ │ period: 6,
1042 │ │ row: 9,
1043 │ │ column: 8,
1044 │ │ shells: [2, 8, 18, 24, 8, 2],
1045 │ │ atomicMass: 150.362,
1046 │ │ molecularDensity: 7.52,
1047 │ │ heatCapacity: 29.54,
1048 │ │ meltingPoint: 1345,
1049 │ │ boilingPoint: 2173,
1050 │ │ ),
1051 │ │ ChemicalElement(
1052 │ │ name: 'Europium',
1053 │ │ symbol: 'Eu',
1054 │ │ category: 'lanthanide',
1055 │ │ stpPhase: MatterPhase.solid,
1056 │ │ appearance: '',
1057 │ │ number: 63,
1058 │ │ period: 6,
1059 │ │ row: 9,
1060 │ │ column: 9,
1061 │ │ shells: [2, 8, 18, 25, 8, 2],
1062 │ │ atomicMass: 151.9641,
1063 │ │ molecularDensity: 5.264,
1064 │ │ heatCapacity: 27.66,
1065 │ │ meltingPoint: 1099,
1066 │ │ boilingPoint: 1802,
1067 │ │ ),
1068 │ │ ChemicalElement(
1069 │ │ name: 'Gadolinium',
1070 │ │ symbol: 'Gd',
1071 │ │ category: 'lanthanide',
1072 │ │ stpPhase: MatterPhase.solid,
1073 │ │ appearance: 'silvery white',
1074 │ │ number: 64,
1075 │ │ period: 6,
1076 │ │ row: 9,
1077 │ │ column: 10,
1078 │ │ shells: [2, 8, 18, 25, 9, 2],
1079 │ │ atomicMass: 157.253,
1080 │ │ molecularDensity: 7.9,
1081 │ │ heatCapacity: 37.03,
1082 │ │ meltingPoint: 1585,
1083 │ │ boilingPoint: 3273,
1084 │ │ ),
1085 │ │ ChemicalElement(
1086 │ │ name: 'Terbium',
1087 │ │ symbol: 'Tb',
1088 │ │ category: 'lanthanide',
1089 │ │ stpPhase: MatterPhase.solid,
1090 │ │ appearance: 'silvery white',
1091 │ │ number: 65,
1092 │ │ period: 6,
1093 │ │ row: 9,
1094 │ │ column: 11,
1095 │ │ shells: [2, 8, 18, 27, 8, 2],
1096 │ │ atomicMass: 158.925352,
1097 │ │ molecularDensity: 8.23,
1098 │ │ heatCapacity: 28.91,
1099 │ │ meltingPoint: 1629,
1100 │ │ boilingPoint: 3396,
1101 │ │ ),
1102 │ │ ChemicalElement(
1103 │ │ name: 'Dysprosium',
1104 │ │ symbol: 'Dy',
1105 │ │ category: 'lanthanide',
1106 │ │ stpPhase: MatterPhase.solid,
1107 │ │ appearance: 'silvery white',
1108 │ │ number: 66,
1109 │ │ period: 6,
1110 │ │ row: 9,
1111 │ │ column: 12,
1112 │ │ shells: [2, 8, 18, 28, 8, 2],
1113 │ │ atomicMass: 162.5001,
1114 │ │ molecularDensity: 8.54,
1115 │ │ heatCapacity: 27.7,
1116 │ │ meltingPoint: 1680,
1117 │ │ boilingPoint: 2840,
1118 │ │ ),
1119 │ │ ChemicalElement(
1120 │ │ name: 'Holmium',
1121 │ │ symbol: 'Ho',
1122 │ │ category: 'lanthanide',
1123 │ │ stpPhase: MatterPhase.solid,
1124 │ │ appearance: 'silvery white',
1125 │ │ number: 67,
1126 │ │ period: 6,
1127 │ │ row: 9,
1128 │ │ column: 13,
1129 │ │ shells: [2, 8, 18, 29, 8, 2],
1130 │ │ atomicMass: 164.930332,
1131 │ │ molecularDensity: 8.79,
1132 │ │ heatCapacity: 27.15,
1133 │ │ meltingPoint: 1734,
1134 │ │ boilingPoint: 2873,
1135 │ │ ),
1136 │ │ ChemicalElement(
1137 │ │ name: 'Erbium',
1138 │ │ symbol: 'Er',
1139 │ │ category: 'lanthanide',
1140 │ │ stpPhase: MatterPhase.solid,
1141 │ │ appearance: 'silvery white',
1142 │ │ number: 68,
1143 │ │ period: 6,
1144 │ │ row: 9,
1145 │ │ column: 14,
1146 │ │ shells: [2, 8, 18, 30, 8, 2],
1147 │ │ atomicMass: 167.2593,
1148 │ │ molecularDensity: 9.066,
1149 │ │ heatCapacity: 28.12,
1150 │ │ meltingPoint: 1802,
1151 │ │ boilingPoint: 3141,
1152 │ │ ),
1153 │ │ ChemicalElement(
1154 │ │ name: 'Thulium',
1155 │ │ symbol: 'Tm',
1156 │ │ category: 'lanthanide',
1157 │ │ stpPhase: MatterPhase.solid,
1158 │ │ appearance: 'silvery gray',
1159 │ │ number: 69,
1160 │ │ period: 6,
1161 │ │ row: 9,
1162 │ │ column: 15,
1163 │ │ shells: [2, 8, 18, 31, 8, 2],
1164 │ │ atomicMass: 168.934222,
1165 │ │ molecularDensity: 9.32,
1166 │ │ heatCapacity: 27.03,
1167 │ │ meltingPoint: 1818,
1168 │ │ boilingPoint: 2223,
1169 │ │ ),
1170 │ │ ChemicalElement(
1171 │ │ name: 'Ytterbium',
1172 │ │ symbol: 'Yb',
1173 │ │ category: 'lanthanide',
1174 │ │ stpPhase: MatterPhase.solid,
1175 │ │ appearance: '',
1176 │ │ number: 70,
1177 │ │ period: 6,
1178 │ │ row: 9,
1179 │ │ column: 16,
1180 │ │ shells: [2, 8, 18, 32, 8, 2],
1181 │ │ atomicMass: 173.0451,
1182 │ │ molecularDensity: 6.9,
1183 │ │ heatCapacity: 26.74,
1184 │ │ meltingPoint: 1097,
1185 │ │ boilingPoint: 1469,
1186 │ │ ),
1187 │ │ ChemicalElement(
1188 │ │ name: 'Lutetium',
1189 │ │ symbol: 'Lu',
1190 │ │ category: 'lanthanide',
1191 │ │ stpPhase: MatterPhase.solid,
1192 │ │ appearance: 'silvery white',
1193 │ │ number: 71,
1194 │ │ period: 6,
1195 │ │ row: 9,
1196 │ │ column: 17,
1197 │ │ shells: [2, 8, 18, 32, 9, 2],
1198 │ │ atomicMass: 174.96681,
1199 │ │ molecularDensity: 9.841,
1200 │ │ heatCapacity: 26.86,
1201 │ │ meltingPoint: 1925,
1202 │ │ boilingPoint: 3675,
1203 │ │ ),
1204 │ │ ChemicalElement(
1205 │ │ name: 'Hafnium',
1206 │ │ symbol: 'Hf',
1207 │ │ category: 'transition metal',
1208 │ │ stpPhase: MatterPhase.solid,
1209 │ │ appearance: 'steel gray',
1210 │ │ number: 72,
1211 │ │ period: 6,
1212 │ │ row: 6,
1213 │ │ column: 4,
1214 │ │ shells: [2, 8, 18, 32, 10, 2],
1215 │ │ atomicMass: 178.492,
1216 │ │ molecularDensity: 13.31,
1217 │ │ heatCapacity: 25.73,
1218 │ │ meltingPoint: 2506,
1219 │ │ boilingPoint: 4876,
1220 │ │ ),
1221 │ │ ChemicalElement(
1222 │ │ name: 'Tantalum',
1223 │ │ symbol: 'Ta',
1224 │ │ category: 'transition metal',
1225 │ │ stpPhase: MatterPhase.solid,
1226 │ │ appearance: 'gray blue',
1227 │ │ number: 73,
1228 │ │ period: 6,
1229 │ │ row: 6,
1230 │ │ column: 5,
1231 │ │ shells: [2, 8, 18, 32, 11, 2],
1232 │ │ atomicMass: 180.947882,
1233 │ │ molecularDensity: 16.69,
1234 │ │ heatCapacity: 25.36,
1235 │ │ meltingPoint: 3290,
1236 │ │ boilingPoint: 5731,
1237 │ │ ),
1238 │ │ ChemicalElement(
1239 │ │ name: 'Tungsten',
1240 │ │ symbol: 'W',
1241 │ │ category: 'transition metal',
1242 │ │ stpPhase: MatterPhase.solid,
1243 │ │ appearance: 'grayish white, lustrous',
1244 │ │ number: 74,
1245 │ │ period: 6,
1246 │ │ row: 6,
1247 │ │ column: 6,
1248 │ │ shells: [2, 8, 18, 32, 12, 2],
1249 │ │ atomicMass: 183.841,
1250 │ │ molecularDensity: 19.25,
1251 │ │ heatCapacity: 24.27,
1252 │ │ meltingPoint: 3695,
1253 │ │ boilingPoint: 6203,
1254 │ │ ),
1255 │ │ ChemicalElement(
1256 │ │ name: 'Rhenium',
1257 │ │ symbol: 'Re',
1258 │ │ category: 'transition metal',
1259 │ │ stpPhase: MatterPhase.solid,
1260 │ │ appearance: 'silvery-grayish',
1261 │ │ number: 75,
1262 │ │ period: 6,
1263 │ │ row: 6,
1264 │ │ column: 7,
1265 │ │ shells: [2, 8, 18, 32, 13, 2],
1266 │ │ atomicMass: 186.2071,
1267 │ │ molecularDensity: 21.02,
1268 │ │ heatCapacity: 25.48,
1269 │ │ meltingPoint: 3459,
1270 │ │ boilingPoint: 5869,
1271 │ │ ),
1272 │ │ ChemicalElement(
1273 │ │ name: 'Osmium',
1274 │ │ symbol: 'Os',
1275 │ │ category: 'transition metal',
1276 │ │ stpPhase: MatterPhase.solid,
1277 │ │ appearance: 'silvery, blue cast',
1278 │ │ number: 76,
1279 │ │ period: 6,
1280 │ │ row: 6,
1281 │ │ column: 8,
1282 │ │ shells: [2, 8, 18, 32, 14, 2],
1283 │ │ atomicMass: 190.233,
1284 │ │ molecularDensity: 22.59,
1285 │ │ heatCapacity: 24.7,
1286 │ │ meltingPoint: 3306,
1287 │ │ boilingPoint: 5285,
1288 │ │ ),
1289 │ │ ChemicalElement(
1290 │ │ name: 'Iridium',
1291 │ │ symbol: 'Ir',
1292 │ │ category: 'transition metal',
1293 │ │ stpPhase: MatterPhase.solid,
1294 │ │ appearance: 'silvery white',
1295 │ │ number: 77,
1296 │ │ period: 6,
1297 │ │ row: 6,
1298 │ │ column: 9,
1299 │ │ shells: [2, 8, 18, 32, 15, 2],
1300 │ │ atomicMass: 192.2173,
1301 │ │ molecularDensity: 22.56,
1302 │ │ heatCapacity: 25.1,
1303 │ │ meltingPoint: 2719,
1304 │ │ boilingPoint: 4403,
1305 │ │ ),
1306 │ │ ChemicalElement(
1307 │ │ name: 'Platinum',
1308 │ │ symbol: 'Pt',
1309 │ │ category: 'transition metal',
1310 │ │ stpPhase: MatterPhase.solid,
1311 │ │ appearance: 'silvery white',
1312 │ │ number: 78,
1313 │ │ period: 6,
1314 │ │ row: 6,
1315 │ │ column: 10,
1316 │ │ shells: [2, 8, 18, 32, 17, 1],
1317 │ │ atomicMass: 195.0849,
1318 │ │ molecularDensity: 21.45,
1319 │ │ heatCapacity: 25.86,
1320 │ │ meltingPoint: 2041.4,
1321 │ │ boilingPoint: 4098,
1322 │ │ ),
1323 │ │ ChemicalElement(
1324 │ │ name: 'Gold',
1325 │ │ symbol: 'Au',
1326 │ │ category: 'transition metal',
1327 │ │ stpPhase: MatterPhase.solid,
1328 │ │ appearance: 'metallic yellow',
1329 │ │ number: 79,
1330 │ │ period: 6,
1331 │ │ row: 6,
1332 │ │ column: 11,
1333 │ │ shells: [2, 8, 18, 32, 18, 1],
1334 │ │ atomicMass: 196.9665695,
1335 │ │ molecularDensity: 19.3,
1336 │ │ heatCapacity: 25.418,
1337 │ │ meltingPoint: 1337.33,
1338 │ │ boilingPoint: 3243,
1339 │ │ ),
1340 │ │ ChemicalElement(
1341 │ │ name: 'Mercury',
1342 │ │ symbol: 'Hg',
1343 │ │ category: 'transition metal',
1344 │ │ stpPhase: MatterPhase.liquid,
1345 │ │ appearance: 'silvery',
1346 │ │ number: 80,
1347 │ │ period: 6,
1348 │ │ row: 6,
1349 │ │ column: 12,
1350 │ │ shells: [2, 8, 18, 32, 18, 2],
1351 │ │ atomicMass: 200.5923,
1352 │ │ molecularDensity: 13.534,
1353 │ │ heatCapacity: 27.983,
1354 │ │ meltingPoint: 234.321,
1355 │ │ boilingPoint: 629.88,
1356 │ │ ),
1357 │ │ ChemicalElement(
1358 │ │ name: 'Thallium',
1359 │ │ symbol: 'Tl',
1360 │ │ category: 'post-transition metal',
1361 │ │ stpPhase: MatterPhase.solid,
1362 │ │ appearance: 'silvery white',
1363 │ │ number: 81,
1364 │ │ period: 6,
1365 │ │ row: 6,
1366 │ │ column: 13,
1367 │ │ shells: [2, 8, 18, 32, 18, 3],
1368 │ │ atomicMass: 204.38,
1369 │ │ molecularDensity: 11.85,
1370 │ │ heatCapacity: 26.32,
1371 │ │ meltingPoint: 577,
1372 │ │ boilingPoint: 1746,
1373 │ │ ),
1374 │ │ ChemicalElement(
1375 │ │ name: 'Lead',
1376 │ │ symbol: 'Pb',
1377 │ │ category: 'post-transition metal',
1378 │ │ stpPhase: MatterPhase.solid,
1379 │ │ appearance: 'metallic gray',
1380 │ │ number: 82,
1381 │ │ period: 6,
1382 │ │ row: 6,
1383 │ │ column: 14,
1384 │ │ shells: [2, 8, 18, 32, 18, 4],
1385 │ │ atomicMass: 207.21,
1386 │ │ molecularDensity: 11.34,
1387 │ │ heatCapacity: 26.65,
1388 │ │ meltingPoint: 600.61,
1389 │ │ boilingPoint: 2022,
1390 │ │ ),
1391 │ │ ChemicalElement(
1392 │ │ name: 'Bismuth',
1393 │ │ symbol: 'Bi',
1394 │ │ category: 'post-transition metal',
1395 │ │ stpPhase: MatterPhase.solid,
1396 │ │ appearance: 'lustrous silver',
1397 │ │ number: 83,
1398 │ │ period: 6,
1399 │ │ row: 6,
1400 │ │ column: 15,
1401 │ │ shells: [2, 8, 18, 32, 18, 5],
1402 │ │ atomicMass: 208.980401,
1403 │ │ molecularDensity: 9.78,
1404 │ │ heatCapacity: 25.52,
1405 │ │ meltingPoint: 544.7,
1406 │ │ boilingPoint: 1837,
1407 │ │ ),
1408 │ │ ChemicalElement(
1409 │ │ name: 'Polonium',
1410 │ │ symbol: 'Po',
1411 │ │ category: 'post-transition metal',
1412 │ │ stpPhase: MatterPhase.solid,
1413 │ │ appearance: 'silvery',
1414 │ │ number: 84,
1415 │ │ period: 6,
1416 │ │ row: 6,
1417 │ │ column: 16,
1418 │ │ shells: [2, 8, 18, 32, 18, 6],
1419 │ │ atomicMass: 209,
1420 │ │ molecularDensity: 9.196,
1421 │ │ heatCapacity: 26.4,
1422 │ │ meltingPoint: 527,
1423 │ │ boilingPoint: 1235,
1424 │ │ ),
1425 │ │ ChemicalElement(
1426 │ │ name: 'Astatine',
1427 │ │ symbol: 'At',
1428 │ │ category: 'metalloid',
1429 │ │ stpPhase: MatterPhase.solid,
1430 │ │ appearance: 'unknown, probably metallic',
1431 │ │ number: 85,
1432 │ │ period: 6,
1433 │ │ row: 6,
1434 │ │ column: 17,
1435 │ │ shells: [2, 8, 18, 32, 18, 7],
1436 │ │ atomicMass: 210,
1437 │ │ molecularDensity: 26.35,
1438 │ │ meltingPoint: 575,
1439 │ │ boilingPoint: 610,
1440 │ │ ),
1441 │ │ ChemicalElement(
1442 │ │ name: 'Radon',
1443 │ │ symbol: 'Rn',
1444 │ │ category: 'noble gas',
1445 │ │ stpPhase: MatterPhase.gas,
1446 │ │ appearance:
1447 │ │ 'colorless gas, occasionally glows green or red in discharge tubes',
1448 │ │ number: 86,
1449 │ │ period: 6,
1450 │ │ row: 6,
1451 │ │ column: 18,
1452 │ │ shells: [2, 8, 18, 32, 18, 8],
1453 │ │ atomicMass: 222,
1454 │ │ molecularDensity: 9.73,
1455 │ │ meltingPoint: 202,
1456 │ │ boilingPoint: 211.5,
1457 │ │ ),
1458 │ │ ChemicalElement(
1459 │ │ name: 'Francium',
1460 │ │ symbol: 'Fr',
1461 │ │ category: 'alkali metal',
1462 │ │ stpPhase: MatterPhase.solid,
1463 │ │ appearance: '',
1464 │ │ number: 87,
1465 │ │ period: 7,
1466 │ │ row: 7,
1467 │ │ column: 1,
1468 │ │ shells: [2, 8, 18, 32, 18, 8, 1],
1469 │ │ atomicMass: 223,
1470 │ │ molecularDensity: 1.87,
1471 │ │ meltingPoint: 300,
1472 │ │ boilingPoint: 950,
1473 │ │ ),
1474 │ │ ChemicalElement(
1475 │ │ name: 'Radium',
1476 │ │ symbol: 'Ra',
1477 │ │ category: 'alkaline earth metal',
1478 │ │ stpPhase: MatterPhase.solid,
1479 │ │ appearance: 'silvery white metallic',
1480 │ │ number: 88,
1481 │ │ period: 7,
1482 │ │ row: 7,
1483 │ │ column: 2,
1484 │ │ shells: [2, 8, 18, 32, 18, 8, 2],
1485 │ │ atomicMass: 226,
1486 │ │ molecularDensity: 5.5,
1487 │ │ meltingPoint: 1233,
1488 │ │ boilingPoint: 2010,
1489 │ │ ),
1490 │ │ ChemicalElement(
1491 │ │ name: 'Actinium',
1492 │ │ symbol: 'Ac',
1493 │ │ category: 'actinide',
1494 │ │ stpPhase: MatterPhase.solid,
1495 │ │ appearance: '',
1496 │ │ number: 89,
1497 │ │ period: 7,
1498 │ │ row: 10,
1499 │ │ column: 3,
1500 │ │ shells: [2, 8, 18, 32, 18, 9, 2],
1501 │ │ atomicMass: 227,
1502 │ │ molecularDensity: 10,
1503 │ │ heatCapacity: 27.2,
1504 │ │ meltingPoint: 1500,
1505 │ │ boilingPoint: 3500,
1506 │ │ ),
1507 │ │ ChemicalElement(
1508 │ │ name: 'Thorium',
1509 │ │ symbol: 'Th',
1510 │ │ category: 'actinide',
1511 │ │ stpPhase: MatterPhase.solid,
1512 │ │ appearance: 'silvery, often with black tarnish',
1513 │ │ number: 90,
1514 │ │ period: 7,
1515 │ │ row: 10,
1516 │ │ column: 4,
1517 │ │ shells: [2, 8, 18, 32, 18, 10, 2],
1518 │ │ atomicMass: 232.03774,
1519 │ │ molecularDensity: 11.724,
1520 │ │ heatCapacity: 26.23,
1521 │ │ meltingPoint: 2023,
1522 │ │ boilingPoint: 5061,
1523 │ │ ),
1524 │ │ ChemicalElement(
1525 │ │ name: 'Protactinium',
1526 │ │ symbol: 'Pa',
1527 │ │ category: 'actinide',
1528 │ │ stpPhase: MatterPhase.solid,
1529 │ │ appearance: 'bright, silvery metallic luster',
1530 │ │ number: 91,
1531 │ │ period: 7,
1532 │ │ row: 10,
1533 │ │ column: 5,
1534 │ │ shells: [2, 8, 18, 32, 20, 9, 2],
1535 │ │ atomicMass: 231.035882,
1536 │ │ molecularDensity: 15.37,
1537 │ │ meltingPoint: 1841,
1538 │ │ boilingPoint: 4300,
1539 │ │ ),
1540 │ │ ChemicalElement(
1541 │ │ name: 'Uranium',
1542 │ │ symbol: 'U',
1543 │ │ category: 'actinide',
1544 │ │ stpPhase: MatterPhase.solid,
1545 │ │ appearance: '',
1546 │ │ number: 92,
1547 │ │ period: 7,
1548 │ │ row: 10,
1549 │ │ column: 6,
1550 │ │ shells: [2, 8, 18, 32, 21, 9, 2],
1551 │ │ atomicMass: 238.028913,
1552 │ │ molecularDensity: 19.1,
1553 │ │ heatCapacity: 27.665,
1554 │ │ meltingPoint: 1405.3,
1555 │ │ boilingPoint: 4404,
1556 │ │ ),
1557 │ │ ChemicalElement(
1558 │ │ name: 'Neptunium',
1559 │ │ symbol: 'Np',
1560 │ │ category: 'actinide',
1561 │ │ stpPhase: MatterPhase.solid,
1562 │ │ appearance: 'silvery metallic',
1563 │ │ number: 93,
1564 │ │ period: 7,
1565 │ │ row: 10,
1566 │ │ column: 7,
1567 │ │ shells: [2, 8, 18, 32, 22, 9, 2],
1568 │ │ atomicMass: 237,
1569 │ │ molecularDensity: 20.45,
1570 │ │ heatCapacity: 29.46,
1571 │ │ meltingPoint: 912,
1572 │ │ boilingPoint: 4447,
1573 │ │ ),
1574 │ │ ChemicalElement(
1575 │ │ name: 'Plutonium',
1576 │ │ symbol: 'Pu',
1577 │ │ category: 'actinide',
1578 │ │ stpPhase: MatterPhase.solid,
1579 │ │ appearance: 'silvery white, tarnishing to dark gray in air',
1580 │ │ number: 94,
1581 │ │ period: 7,
1582 │ │ row: 10,
1583 │ │ column: 8,
1584 │ │ shells: [2, 8, 18, 32, 24, 8, 2],
1585 │ │ atomicMass: 244,
1586 │ │ molecularDensity: 19.816,
1587 │ │ heatCapacity: 35.5,
1588 │ │ meltingPoint: 912.5,
1589 │ │ boilingPoint: 3505,
1590 │ │ ),
1591 │ │ ChemicalElement(
1592 │ │ name: 'Americium',
1593 │ │ symbol: 'Am',
1594 │ │ category: 'actinide',
1595 │ │ stpPhase: MatterPhase.solid,
1596 │ │ appearance: 'silvery white',
1597 │ │ number: 95,
1598 │ │ period: 7,
1599 │ │ row: 10,
1600 │ │ column: 9,
1601 │ │ shells: [2, 8, 18, 32, 25, 8, 2],
1602 │ │ atomicMass: 243,
1603 │ │ molecularDensity: 12,
1604 │ │ heatCapacity: 62.7,
1605 │ │ meltingPoint: 1449,
1606 │ │ boilingPoint: 2880,
1607 │ │ ),
1608 │ │ ChemicalElement(
1609 │ │ name: 'Curium',
1610 │ │ symbol: 'Cm',
1611 │ │ category: 'actinide',
1612 │ │ stpPhase: MatterPhase.solid,
1613 │ │ appearance: 'silvery metallic, glows purple in the dark',
1614 │ │ number: 96,
1615 │ │ period: 7,
1616 │ │ row: 10,
1617 │ │ column: 10,
1618 │ │ shells: [2, 8, 18, 32, 25, 9, 2],
1619 │ │ atomicMass: 247,
1620 │ │ molecularDensity: 13.51,
1621 │ │ meltingPoint: 1613,
1622 │ │ boilingPoint: 3383,
1623 │ │ ),
1624 │ │ ChemicalElement(
1625 │ │ name: 'Berkelium',
1626 │ │ symbol: 'Bk',
1627 │ │ category: 'actinide',
1628 │ │ stpPhase: MatterPhase.solid,
1629 │ │ appearance: 'silvery',
1630 │ │ number: 97,
1631 │ │ period: 7,
1632 │ │ row: 10,
1633 │ │ column: 11,
1634 │ │ shells: [2, 8, 18, 32, 27, 8, 2],
1635 │ │ atomicMass: 247,
1636 │ │ molecularDensity: 14.78,
1637 │ │ meltingPoint: 1259,
1638 │ │ boilingPoint: 2900,
1639 │ │ ),
1640 │ │ ChemicalElement(
1641 │ │ name: 'Californium',
1642 │ │ symbol: 'Cf',
1643 │ │ category: 'actinide',
1644 │ │ stpPhase: MatterPhase.solid,
1645 │ │ appearance: 'silvery',
1646 │ │ number: 98,
1647 │ │ period: 7,
1648 │ │ row: 10,
1649 │ │ column: 12,
1650 │ │ shells: [2, 8, 18, 32, 28, 8, 2],
1651 │ │ atomicMass: 251,
1652 │ │ molecularDensity: 15.1,
1653 │ │ meltingPoint: 1173,
1654 │ │ boilingPoint: 1743,
1655 │ │ ),
1656 │ │ ChemicalElement(
1657 │ │ name: 'Einsteinium',
1658 │ │ symbol: 'Es',
1659 │ │ category: 'actinide',
1660 │ │ stpPhase: MatterPhase.solid,
1661 │ │ appearance: 'silver-colored',
1662 │ │ number: 99,
1663 │ │ period: 7,
1664 │ │ row: 10,
1665 │ │ column: 13,
1666 │ │ shells: [2, 8, 18, 32, 29, 8, 2],
1667 │ │ atomicMass: 252,
1668 │ │ molecularDensity: 8.84,
1669 │ │ meltingPoint: 1133,
1670 │ │ boilingPoint: 1269,
1671 │ │ ),
1672 │ │ ChemicalElement(
1673 │ │ name: 'Fermium',
1674 │ │ symbol: 'Fm',
1675 │ │ category: 'actinide',
1676 │ │ stpPhase: MatterPhase.solid,
1677 │ │ appearance: '',
1678 │ │ number: 100,
1679 │ │ period: 7,
1680 │ │ row: 10,
1681 │ │ column: 14,
1682 │ │ shells: [2, 8, 18, 32, 30, 8, 2],
1683 │ │ atomicMass: 257,
1684 │ │ meltingPoint: 1800,
1685 │ │ ),
1686 │ │ ChemicalElement(
1687 │ │ name: 'Mendelevium',
1688 │ │ symbol: 'Md',
1689 │ │ category: 'actinide',
1690 │ │ stpPhase: MatterPhase.solid,
1691 │ │ appearance: '',
1692 │ │ number: 101,
1693 │ │ period: 7,
1694 │ │ row: 10,
1695 │ │ column: 15,
1696 │ │ shells: [2, 8, 18, 32, 31, 8, 2],
1697 │ │ atomicMass: 258,
1698 │ │ meltingPoint: 1100,
1699 │ │ ),
1700 │ │ ChemicalElement(
1701 │ │ name: 'Nobelium',
1702 │ │ symbol: 'No',
1703 │ │ category: 'actinide',
1704 │ │ stpPhase: MatterPhase.solid,
1705 │ │ appearance: '',
1706 │ │ number: 102,
1707 │ │ period: 7,
1708 │ │ row: 10,
1709 │ │ column: 16,
1710 │ │ shells: [2, 8, 18, 32, 32, 8, 2],
1711 │ │ atomicMass: 259,
1712 │ │ meltingPoint: 1100,
1713 │ │ ),
1714 │ │ ChemicalElement(
1715 │ │ name: 'Lawrencium',
1716 │ │ symbol: 'Lr',
1717 │ │ category: 'actinide',
1718 │ │ stpPhase: MatterPhase.solid,
1719 │ │ appearance: '',
1720 │ │ number: 103,
1721 │ │ period: 7,
1722 │ │ row: 10,
1723 │ │ column: 17,
1724 │ │ shells: [2, 8, 18, 32, 32, 8, 3],
1725 │ │ atomicMass: 266,
1726 │ │ meltingPoint: 1900,
1727 │ │ ),
1728 │ │ ChemicalElement(
1729 │ │ name: 'Rutherfordium',
1730 │ │ symbol: 'Rf',
1731 │ │ category: 'transition metal',
1732 │ │ stpPhase: MatterPhase.solid,
1733 │ │ appearance: '',
1734 │ │ number: 104,
1735 │ │ period: 7,
1736 │ │ row: 7,
1737 │ │ column: 4,
1738 │ │ shells: [2, 8, 18, 32, 32, 10, 2],
1739 │ │ atomicMass: 267,
1740 │ │ molecularDensity: 23.2,
1741 │ │ meltingPoint: 2400,
1742 │ │ boilingPoint: 5800,
1743 │ │ ),
1744 │ │ ChemicalElement(
1745 │ │ name: 'Dubnium',
1746 │ │ symbol: 'Db',
1747 │ │ category: 'transition metal',
1748 │ │ stpPhase: MatterPhase.solid,
1749 │ │ appearance: '',
1750 │ │ number: 105,
1751 │ │ period: 7,
1752 │ │ row: 7,
1753 │ │ column: 5,
1754 │ │ shells: [2, 8, 18, 32, 32, 11, 2],
1755 │ │ atomicMass: 268,
1756 │ │ molecularDensity: 29.3,
1757 │ │ ),
1758 │ │ ChemicalElement(
1759 │ │ name: 'Seaborgium',
1760 │ │ symbol: 'Sg',
1761 │ │ category: 'transition metal',
1762 │ │ stpPhase: MatterPhase.solid,
1763 │ │ appearance: '',
1764 │ │ number: 106,
1765 │ │ period: 7,
1766 │ │ row: 7,
1767 │ │ column: 6,
1768 │ │ shells: [2, 8, 18, 32, 32, 12, 2],
1769 │ │ atomicMass: 269,
1770 │ │ molecularDensity: 35,
1771 │ │ ),
1772 │ │ ChemicalElement(
1773 │ │ name: 'Bohrium',
1774 │ │ symbol: 'Bh',
1775 │ │ category: 'transition metal',
1776 │ │ stpPhase: MatterPhase.solid,
1777 │ │ appearance: '',
1778 │ │ number: 107,
1779 │ │ period: 7,
1780 │ │ row: 7,
1781 │ │ column: 7,
1782 │ │ shells: [2, 8, 18, 32, 32, 13, 2],
1783 │ │ atomicMass: 270,
1784 │ │ molecularDensity: 37.1,
1785 │ │ ),
1786 │ │ ChemicalElement(
1787 │ │ name: 'Hassium',
1788 │ │ symbol: 'Hs',
1789 │ │ category: 'transition metal',
1790 │ │ stpPhase: MatterPhase.solid,
1791 │ │ appearance: '',
1792 │ │ number: 108,
1793 │ │ period: 7,
1794 │ │ row: 7,
1795 │ │ column: 8,
1796 │ │ shells: [2, 8, 18, 32, 32, 14, 2],
1797 │ │ atomicMass: 269,
1798 │ │ molecularDensity: 40.7,
1799 │ │ meltingPoint: 126,
1800 │ │ ),
1801 │ │ ChemicalElement(
1802 │ │ name: 'Meitnerium',
1803 │ │ symbol: 'Mt',
1804 │ │ category: 'unknown, probably transition metal',
1805 │ │ stpPhase: MatterPhase.solid,
1806 │ │ appearance: '',
1807 │ │ number: 109,
1808 │ │ period: 7,
1809 │ │ row: 7,
1810 │ │ column: 9,
1811 │ │ shells: [2, 8, 18, 32, 32, 15, 2],
1812 │ │ atomicMass: 278,
1813 │ │ molecularDensity: 37.4,
1814 │ │ ),
1815 │ │ ChemicalElement(
1816 │ │ name: 'Darmstadtium',
1817 │ │ symbol: 'Ds',
1818 │ │ category: 'unknown, probably transition metal',
1819 │ │ stpPhase: MatterPhase.solid,
1820 │ │ appearance: '',
1821 │ │ number: 110,
1822 │ │ period: 7,
1823 │ │ row: 7,
1824 │ │ column: 10,
1825 │ │ shells: [2, 8, 18, 32, 32, 16, 2],
1826 │ │ atomicMass: 281,
1827 │ │ molecularDensity: 34.8,
1828 │ │ ),
1829 │ │ ChemicalElement(
1830 │ │ name: 'Roentgenium',
1831 │ │ symbol: 'Rg',
1832 │ │ category: 'unknown, probably transition metal',
1833 │ │ stpPhase: MatterPhase.solid,
1834 │ │ appearance: '',
1835 │ │ number: 111,
1836 │ │ period: 7,
1837 │ │ row: 7,
1838 │ │ column: 11,
1839 │ │ shells: [2, 8, 18, 32, 32, 17, 2],
1840 │ │ atomicMass: 282,
1841 │ │ molecularDensity: 28.7,
1842 │ │ ),
1843 │ │ ChemicalElement(
1844 │ │ name: 'Copernicium',
1845 │ │ symbol: 'Cn',
1846 │ │ category: 'transition metal',
1847 │ │ stpPhase: MatterPhase.gas,
1848 │ │ appearance: '',
1849 │ │ number: 112,
1850 │ │ period: 7,
1851 │ │ row: 7,
1852 │ │ column: 12,
1853 │ │ shells: [2, 8, 18, 32, 32, 18, 2],
1854 │ │ atomicMass: 285,
1855 │ │ molecularDensity: 23.7,
1856 │ │ boilingPoint: 3570,
1857 │ │ ),
1858 │ │ ChemicalElement(
1859 │ │ name: 'Nihonium',
1860 │ │ symbol: 'Nh',
1861 │ │ category: 'unknown, probably transition metal',
1862 │ │ stpPhase: MatterPhase.solid,
1863 │ │ appearance: '',
1864 │ │ number: 113,
1865 │ │ period: 7,
1866 │ │ row: 7,
1867 │ │ column: 13,
1868 │ │ shells: [2, 8, 18, 32, 32, 18, 3],
1869 │ │ atomicMass: 286,
1870 │ │ molecularDensity: 16,
1871 │ │ meltingPoint: 700,
1872 │ │ boilingPoint: 1430,
1873 │ │ ),
1874 │ │ ChemicalElement(
1875 │ │ name: 'Flerovium',
1876 │ │ symbol: 'Fl',
1877 │ │ category: 'post-transition metal',
1878 │ │ stpPhase: MatterPhase.solid,
1879 │ │ appearance: '',
1880 │ │ number: 114,
1881 │ │ period: 7,
1882 │ │ row: 7,
1883 │ │ column: 14,
1884 │ │ shells: [2, 8, 18, 32, 32, 18, 4],
1885 │ │ atomicMass: 289,
1886 │ │ molecularDensity: 14,
1887 │ │ meltingPoint: 340,
1888 │ │ boilingPoint: 420,
1889 │ │ ),
1890 │ │ ChemicalElement(
1891 │ │ name: 'Moscovium',
1892 │ │ symbol: 'Mc',
1893 │ │ category: 'unknown, probably post-transition metal',
1894 │ │ stpPhase: MatterPhase.solid,
1895 │ │ appearance: '',
1896 │ │ number: 115,
1897 │ │ period: 7,
1898 │ │ row: 7,
1899 │ │ column: 15,
1900 │ │ shells: [2, 8, 18, 32, 32, 18, 5],
1901 │ │ atomicMass: 289,
1902 │ │ molecularDensity: 13.5,
1903 │ │ meltingPoint: 670,
1904 │ │ boilingPoint: 1400,
1905 │ │ ),
1906 │ │ ChemicalElement(
1907 │ │ name: 'Livermorium',
1908 │ │ symbol: 'Lv',
1909 │ │ category: 'unknown, probably post-transition metal',
1910 │ │ stpPhase: MatterPhase.solid,
1911 │ │ appearance: '',
1912 │ │ number: 116,
1913 │ │ period: 7,
1914 │ │ row: 7,
1915 │ │ column: 16,
1916 │ │ shells: [2, 8, 18, 32, 32, 18, 6],
1917 │ │ atomicMass: 293,
1918 │ │ molecularDensity: 12.9,
1919 │ │ meltingPoint: 709,
1920 │ │ boilingPoint: 1085,
1921 │ │ ),
1922 │ │ ChemicalElement(
1923 │ │ name: 'Tennessine',
1924 │ │ symbol: 'Ts',
1925 │ │ category: 'unknown, probably metalloid',
1926 │ │ stpPhase: MatterPhase.solid,
1927 │ │ appearance: '',
1928 │ │ number: 117,
1929 │ │ period: 7,
1930 │ │ row: 7,
1931 │ │ column: 17,
1932 │ │ shells: [2, 8, 18, 32, 32, 18, 7],
1933 │ │ atomicMass: 294,
1934 │ │ molecularDensity: 7.17,
1935 │ │ meltingPoint: 723,
1936 │ │ boilingPoint: 883,
1937 │ │ ),
1938 │ │ ChemicalElement(
1939 │ │ name: 'Oganesson',
1940 │ │ symbol: 'Og',
1941 │ │ category: 'unknown, predicted to be noble gas',
1942 │ │ stpPhase: MatterPhase.solid,
1943 │ │ appearance: '',
1944 │ │ number: 118,
1945 │ │ period: 7,
1946 │ │ row: 7,
1947 │ │ column: 18,
1948 │ │ shells: [2, 8, 18, 32, 32, 18, 8],
1949 │ │ atomicMass: 294,
1950 │ │ molecularDensity: 4.95,
1951 │ │ boilingPoint: 350,
1952 │ │ ),
1953 │ │ ChemicalElement(
1954 │ │ name: 'Ununennium',
1955 │ │ symbol: 'Uue',
1956 │ │ category: 'unknown, but predicted to be an alkali metal',
1957 │ │ stpPhase: MatterPhase.solid,
1958 │ │ appearance: '',
1959 │ │ number: 119,
1960 │ │ period: 8,
1961 │ │ row: 8,
1962 │ │ column: 1,
1963 │ │ shells: [2, 8, 18, 32, 32, 18, 8, 1],
1964 │ │ atomicMass: 315,
1965 │ │ molecularDensity: 3,
1966 │ │ boilingPoint: 630,
1967 │ │ ),
1968 │ │ ];
│ └─^
╵
To reproduce make sure you are using pedantic and run dartanalyzer lib/src/generated/data.dart
Support up-to-date dependencies
20
/
20
10/10 points: All of the package dependencies are supported in the latest version
No dependencies.
To reproduce run pub outdated --no-dev-dependencies --up-to-date --no-dependency-overrides.