| Tantalum ✕ | |
|---|---|
| Symbol | Ta |
| Atomic number | 73 |
| Chemical property | Transition metal |
| Origin o the name | King Tantalus, father of Niobe from Greek mythology |
| Group | 5 |
| Period | 6 |
| Atomic weight (u) | 180.94788 |
| Atomic weight uncertainty (u) | 0.00002 |
| Density (g/cm³) | 16.654 |
| Melting point (K) | 3290 |
| Boiling point (K) | 5731 |
| Heat capacity (J/(g·K)) | 0.14 |
| Electro-negativity | 1.5 |
| Abundance in earth's crust (mg/kg) | 2 |