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| Size | 512x512 |
#99 Einsteinium - rarity BROWNIAN-MANIACS
| 1st ionization energy | 6.42 eV | 0.85% |
|---|---|---|
| appearance | Silvery | 1.69% |
| atomic mass | 252 u | 0.85% |
| atomic number | 99 | 0.85% |
| atomic radius | 245 picometers (van der Waals radius) | 2.54% |
| boiling point | - | 18.64% |
| cas number | 7429-92-7 | 0.85% |
| cas number of (cl2) | - | 99.15% |
| category | Inner transition metals | 23.73% |
| crystal structure | FCC (face centered cubic) | 11.02% |
| density | 8.84 g/cm3 | 0.85% |
| electronegativity | 1.3 (Pauling scale) | 9.32% |
| electronic configuration | [Rn] 5f11 7s2 | 0.85% |
| electrons | 99 | 0.85% |
| electrons arrangement | 2, 8, 18, 32, 29, 8, 2 | 0.85% |
| main isotopes | - | 7.63% |
| melting point | 1133 K or 860 °C or 1580 °F | 0.85% |
| neutrons | 153 | 1.69% |
| position | Group: actinides, Period: 7, Block: f | 10.17% |
| rarity | BROWNIAN-MANIACS | 33.33% |
| state | Solid | 72.88% |
| sublimation point | - | 99.15% |
| symbol | Es | 0.85% |
| valence electrons | - | 61.02% |
| who discovered | Albert Ghiorso and his team (in 1952) | 1.69% |
Total Rarity Score: 1456.69
Rarity: #97/354