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Chemical element: Thorium (Th)
| Atomic Number: | 90 |
| Element Symbol: | Th |
| Element Name: | Thorium |
| Atomic Weight: | 232.0381 |
| Group Name: | Actinoid |
| Period Number: | 7 (actinoid) |
| Block: | f-block |
| Ground State Configuration: | [Rn] 6d2 7s2 |
| Ground State Level: | 3F2 |
| Standard State: | Solid |
| Bond Length: | 359.5 |
| Atomic Radius Empirical: | 180 |
| First Ionization Energy: | 587 |
| Pauling Electronegativity: | 1.3 |
| Allred Rochow Electronegativity: | 1.11 |
| Density Of Solid: | 11724 |
| Molar Volume: | 19.80 |
| Velocity Of Sound: | 2490 |
| Youngs Modulus: | 79 |
| Rigidity Modulus: | 31 |
| Bulk Modulus: | 54 |
| Poissons Ratio: | 0.27 |
| Mineral Hardness: | 3.0 |
| Brinell Hardness: | 400 |
| Vickers Hardness: | 350 |
| Electrical Resistivity: | 15 |
| Melting Point: | 1842 |
| Boiling Point: | 4820 |
| Superconduction Temperature: | -271.77 |
| Thermal Conductivity: | 54 |
| Coefficient Of Linear Expansion: | 11.0 |
| Enthalpy Of Fusion: | 16 |
| Enthalpy Of Vaporization: | 530 |
| Enthalpy Of Atmization: | 598 |
| Most Common Oxidation Numbers: | 4 |
| Color: | Silvery white |
| Classification: | Metallic |
| Discovered By: | Jons Berzelius |
| Discovered At: | Sweden |
| Discovered When: | 1829 |
| Origin Of Name: | Named after Thor, the mythological Scandinavian god of war |
Calculate the molecular weight of Thorium or molecular weight Th.
Also see the full list of chemical elements and atomic weights.
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