| Content-Type | image/png |
|---|---|
| Content-Length | 2.15 kB |
| Size | 512x512 |
#62 Samarium - rarity ZERO-KELVIN
| 1st ionization energy | 5.644 eV | 0.85% |
|---|---|---|
| appearance | Silvery white | 6.78% |
| atomic mass | 150.36 u | 0.85% |
| atomic number | 62 | 0.85% |
| atomic radius | 229 picometers (van der Waals radius) | 2.54% |
| boiling point | 2173 K or 1900 °C or 3452 °F | 0.85% |
| cas number | 7440-19-9 | 0.85% |
| category | Inner transition metals | 23.73% |
| crystal structure | Rhombohedral | 3.39% |
| density | 7.35 g/cm3 | 0.85% |
| electronegativity | 1.17 (Pauling scale) | 0.85% |
| electronic configuration | [Xe] 4f6 6s2 | 0.85% |
| electrons | 62 | 0.85% |
| electrons arrangement | 2, 8, 18, 24, 8, 2 | 0.85% |
| main isotopes | 152Sm | 0.85% |
| melting point | 1345 K or 1072 °C or 1962 °F | 0.85% |
| neutrons | 88 | 0.85% |
| position | Group: lanthanides, Period: 6, Block: f | 6.78% |
| rarity | ZERO-KELVIN | 33.33% |
| state | Solid | 72.88% |
| symbol | Sm | 0.85% |
| who discovered | Lecoq de Boisbaudran in 1879 | 0.85% |
Total Rarity Score: 1876.92
Rarity: #70/354