| name | Thorium |
| latin | Thorium |
| french | Thorium |
| german | Thorium |
| symbol | Th |
| proton number | 90 |
| atomic weight | 232.0381 |
| Pauling electronegativity | 1.3 |
| electronic configuration | [Rn] 5f06d27s2 1s22s22p63s23p63d104s24p64d105s25p64f145d106s26p65f06d27s2 |
| melting point | 2115 K, 1842°C, 3347°F |
| boiling point | 5093 K, 4820°C, 8708°F |
| group | - |
| period | 7 |
| state (by 20°C) | solid |
| oxidation states | +4 |
| Year of discovery | Discoverer |
| 1828 | Jons J. Berzelius (1779-1848) |