| Tantalum | |
| Elemental State | Ta |
| Electron Configuration | 1s22s22p63s23p63d104s24p64d104f145s25p66s25d3 |
| First Ionization Potential | 7.550 eV |
| Electron Affinity | 0.322 eV |
| Z* | |
| Pauling Electronegativity | 1.5 |
| Covalent Radius | 1.38 Å |
| Metallic Radius | 1.47 Å |
| Ionic Radius | 0.86 Å Ta3+ coordination number
= 6
0.82 Å Ta4+ coordination number = 6 0.78 Å Ta5+ coordination number = 6 0.88 Å Ta5+ coordination number = 8 |
| van der Waal's Radius | |
| Melting Point | 3017 oC |
| Boiling Point | 5458 oC |
| Density | 16.654 g/cm3 |
| Other Properties | |