| Hafnium | |
| Elemental State | Hf |
| Electron Configuration | 1s22s22p63s23p63d104s24p64d104f145s25p66s25d2 |
| First Ionization Potential | 6.825 eV |
| Electron Affinity | ~0 eV (calculated) |
| Z* | |
| Pauling Electronegativity | 1.3 |
| Covalent Radius | 1.49 Å |
| Metallic Radius | 1.59 Å |
| Ionic Radius | 0.72 Å Hf 4+ coordination number
= 4
0.85 Å Hf 4+ coordination number = 6 |
| van der Waal's Radius | |
| Melting Point | 2233 oC |
| Boiling Point | 4603 oC |
| Density | 13.31 g/cm3 |
| Other Properties | |