| Hafnium ✕ | |
|---|---|
| Symbol | Hf |
| Atomic number | 72 |
| Chemical property | Transition metal |
| Origin o the name | Hafnia, the New Latin name for Copenhagen |
| Group | 4 |
| Period | 6 |
| Atomic weight (u) | 178.49 |
| Atomic weight uncertainty (u) | 0.02 |
| Density (g/cm³) | 13.31 |
| Melting point (K) | 2506 |
| Boiling point (K) | 4876 |
| Heat capacity (J/(g·K)) | 0.144 |
| Electro-negativity | 1.3 |
| Abundance in earth's crust (mg/kg) | 3 |