| Attribute | Value |
|---|---|
| Symbol | Hf |
| Standard state | Solid |
| Atomic mass | 178.49 u |
| Electron configuration | [Xe]6s²4f¹⁴5d² |
| Oxidation states |
|
| Electronegativity (pauling scale) | 1.3 |
| Atomic radius (van der waals) | 212 pm |
| Ionization energy | 6.825 eV |
| Melting point | 2506 K |
| Boiling point | 4876 K |
| Density | 13.3 g/cm³ |
| Atomic number | 72 |
| Group name | Transition metal |
| Discovered | 1923 year |
| Electron affinity | Add |