| Element | Thorium | Symbol | Th |
| Atomic Number | 90 | Molar Mass | 232.04 g mol-1 |
| Electron Configuration | [Rn]6d27s2 | Normal State | solid metal |
| Density @STP | 11.73 g cm-3 | Melting Point | 1750oC |
| Boiling Point | 4788oC | Stable Isotopes | 232Th |
| Atomic Radius | 180 pm | Ionic Radius | 99 (4+) pm |
| Electronegativity (Pauling) | 1.3 | Ionization Energy (1st) | 587 kJ mol-1 |
| Ionization Energy (2nd) | 1110 kJ mol-1 | Ionization Energy (3rd) | 1978 kJ mol-1 |
| Molar Heat Capacity | 27.3 J K-1mol-1 | Standard Molar Entropy | 51.8 J K-1mol-1 |
| Enthalpy of Fusion | 19.2 kJ mol-1 | Enthalpy of Vapourization | 543.9 kJ mol-1 |