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Chemical element: Tantalum (Ta)
| Atomic Number: | 73 |
| Element Symbol: | Ta |
| Element Name: | Tantalum |
| Atomic Weight: | 180.9479 |
| Group Number: | 5 |
| Group Name: | none |
| Period Number: | 6 |
| Block: | d-block |
| Ground State Configuration: | [Xe] 4f14 5d3 6s2 |
| Ground State Level: | 4F3/2 |
| Standard State: | Solid |
| Bond Length: | 286 |
| Atomic Radius Empirical: | 145 |
| Atomic Radius Calculated: | 200 |
| Covalent Radius Empirical: | 138 |
| Electron Affinity: | 31 |
| First Ionization Energy: | 761 |
| Pauling Electronegativity: | 1.5 |
| Allred Rochow Electronegativity: | 1.33 |
| Density Of Solid: | 16650 |
| Molar Volume: | 10.85 |
| Velocity Of Sound: | 3400 |
| Youngs Modulus: | 186 |
| Rigidity Modulus: | 69 |
| Bulk Modulus: | 200 |
| Poissons Ratio: | 0.34 |
| Mineral Hardness: | 6.5 |
| Brinell Hardness: | 800 |
| Vickers Hardness: | 873 |
| Electrical Resistivity: | 13 |
| Reflectivity: | 78 |
| Melting Point: | 3017 |
| Boiling Point: | 5458 |
| Superconduction Temperature: | -268.68 |
| Thermal Conductivity: | 57 |
| Coefficient Of Linear Expansion: | 6.3 |
| Enthalpy Of Fusion: | 36 |
| Enthalpy Of Vaporization: | 735 |
| Enthalpy Of Atmization: | 782 |
| Most Common Oxidation Numbers: | 5 |
| Color: | Grey blue |
| Classification: | Metallic |
| Discovered By: | Anders Ekeberg |
| Discovered At: | Sweden |
| Discovered When: | 1802 |
| Origin Of Name: | From the Greek word Tantalos meaning father of Niobe (Greek mythology, (tantalum is closely related to niobium in the periodic table) |
Calculate the molecular weight of Tantalum or molecular weight Ta.
Also see the full list of chemical elements and atomic weights.
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