Thorium
Electron Configuration
|
General Properties
| Atomic Symbol | Th |
| Atomic Weight | 232.00 g/mol |
| Element Number | 90 |
| Standard State | Solid |
| Standard Type | Strongly Basic |
| Date of Discovery | 1828 |
| Discoverer | Berzelius |
Physical Properties
| Oxidation States | 4 |
| Boiling Point | 5060 K |
| Melting Point | 2028 K |
| Density | 11.72 g/cm³ |
| Electron Configuration | [Rn]6d2,7s2 |
| Acid/Base Properties | Basic |
| Crystal Structure | Cubic, face centered |
| Electronegativity | 1.3 |
| Heat of Vaporization | 543.92 kJ/mol |
| Heat of Fusion | 15.65 kJ/mol |
| Electrical Conductivity | 7.1 10^6omg-¹cm-¹ |
| Thermal Conductivity | 54 Wm-¹K-¹ (at 300 K) |
| Specific Heat Capacity | 0.113 Jg-¹K-¹ (at 300 K) |
| First Ionization Potential | 6.08 |
| Atomic Volume | 19.90 cm³/mol |
| Atomic Radius | 1.80 Å |
| Covalent Radius | 1.65 Å |
| Synthetic | No |