Ta
Tantalum
Element 73 · Transition metal · Period 6, Group 5
Solid · Discovered 1802
Atomic Properties
| Atomic Number | 73 |
| Atomic Mass | 180.9479u |
| Electron Configuration | [Xe]6s2 4f14 5d3 |
| Electronegativity | 1.5Pauling |
| Atomic Radius | 217pm |
| Ionization Energy | 7.89eV |
| Electron Affinity | 0.322eV |
| Oxidation States | +5 |
Physical Properties
| Standard State | Solid |
| Melting Point | 3290K |
| Boiling Point | 5731K |
| Density | 16.4g/cm³ |
| Group Block | Transition metal |
| Year Discovered | 1802 |