The Periodic Table of Elements
73
Ta
Tantalum
180.94788(2) amu
Additional Information:
| State | Group Block | Density | Atomic Radius | Electron Affinity | Ionization Energy | Melting Point | Boiling Point | Year Discovered |
|---|---|---|---|---|---|---|---|---|
| solid | transition metal | 16.65 kg/L | 138 pm | -31 | 761 kJ/mol | 3290 °K | 5731 °K | 1802 |
