| Content-Type | image/png |
|---|---|
| Content-Length | 8.69 kB |
| Size | 512x512 |
#90 Thorium - rarity ZERO-KELVIN
| 1st ionization energy | 6.08 eV | 0.85% |
|---|---|---|
| appearance | Silvery-white metallic appearance | 2.54% |
| atomic mass | 232.04 u | 0.85% |
| atomic number | 90 | 0.85% |
| atomic radius | 237 picometers (van der Waals radius) | 1.69% |
| boiling point | 5061 K or 4788 °C or 8650 °F | 0.85% |
| cas number | 7440-29-1 | 0.85% |
| cas number of (cl2) | - | 99.15% |
| category | Inner transition metals | 23.73% |
| crystal structure | FCC (face centered cubic) | 11.02% |
| density | 11.725 g/cm3 | 0.85% |
| electronegativity | 1.3 (Pauling scale) | 9.32% |
| electronic configuration | [Rn] 6d2 7s2 | 0.85% |
| electrons | 90 | 0.85% |
| electrons arrangement | 2, 8, 18, 32, 18, 10, 2 | 0.85% |
| main isotopes | 232Th | 0.85% |
| melting point | 2023 K or 1750 °C or 3182 °F | 0.85% |
| neutrons | 142 | 0.85% |
| position | Group: actinides, Period: 7, Block: f | 10.17% |
| rarity | ZERO-KELVIN | 33.33% |
| state | Solid | 72.88% |
| sublimation point | - | 99.15% |
| symbol | Th | 0.85% |
| valence electrons | - | 61.02% |
| who discovered | Jons Jakob Berzelius (in 1829) | 0.85% |
Total Rarity Score: 1792.21
Rarity: #81/354