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| Content-Length | 2.15 kB |
| Size | 512x512 |
#100 Fermium - rarity BROWNIAN-MANIACS
| 1st ionization energy | 6.50 eV | 0.85% |
|---|---|---|
| atomic mass | 257 u | 0.85% |
| atomic number | 100 | 0.85% |
| cas number | 7440-72-4 | 0.85% |
| category | Inner transition metals | 23.73% |
| crystal structure | FCC (face centered cubic) | 11.02% |
| density | 9.7 g/cm3 | 0.85% |
| electronegativity | 1.3 (Pauling scale) | 9.32% |
| electronic configuration | [Rn] 5f12 7s2 | 0.85% |
| electrons | 100 | 0.85% |
| electrons arrangement | 2, 8, 18, 32, 30, 8, 2 | 0.85% |
| main isotopes | 257Fm | 0.85% |
| melting point | 1800 K or 1527 °C or 2781 °F | 0.85% |
| neutrons | 157 | 6.78% |
| position | Group: actinides, Period: 7, Block: f | 10.17% |
| rarity | BROWNIAN-MANIACS | 33.33% |
| state | Solid (predicted) | 12.71% |
| symbol | Fm | 0.85% |
| who discovered | Albert Ghiorso and his team (in 1952) | 1.69% |
Total Rarity Score: 1416.47
Rarity: #97/354