| Attribute | Value |
|---|---|
| Symbol | Ta |
| Standard state | Solid |
| Atomic mass | 180.9479 u |
| Electron configuration | [Xe]6s²4f¹⁴5d³ |
| Oxidation states |
|
| Electronegativity (pauling scale) | 1.5 |
| Atomic radius (van der waals) | 217 pm |
| Ionization energy | 7.89 eV |
| Electron affinity | 0.322 eV |
| Melting point | 3290 K |
| Boiling point | 5731 K |
| Density | 16.4 g/cm³ |
| Atomic number | 73 |
| Group name | Transition metal |
| Discovered | 1802 year |