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| Size | 512x512 |
#101 Mendelevium - rarity ZERO-KELVIN
| 1st ionization energy | 6.58 eV | 0.85% |
|---|---|---|
| atomic mass | 258 u | 0.85% |
| atomic number | 101 | 0.85% |
| cas number | 7440-11-1 | 0.85% |
| category | Inner transition metals | 23.73% |
| crystal structure | FCC (face centered cubic) | 11.02% |
| density | 10.3 g/cm3 | 0.85% |
| electronegativity | 1.3 (Pauling scale) | 9.32% |
| electronic configuration | [Rn] 5f13 7s2 | 0.85% |
| electrons | 101 | 0.85% |
| electrons arrangement | 2, 8, 18, 32, 31, 8, 2 | 0.85% |
| main isotopes | 258Md and 260Md | 0.85% |
| melting point | 1100 K or 827 °C or 1521 °F | 1.69% |
| neutrons | 157 | 6.78% |
| position | Group: actinides, Period: 7, Block: f | 10.17% |
| rarity | ZERO-KELVIN | 33.33% |
| state | Solid (predicted) | 12.71% |
| symbol | Md | 0.85% |
| who discovered | Albert Ghiorso and his team (in 1955) | 0.85% |
Total Rarity Score: 1416.47
Rarity: #97/354