Facts
- Symbol
- Hf
- Atomic number
- 72
- Atomic mass
- 178.5 u
- Minerals
- 1
- Period
- 6
- Group
- 4
- Block
- d
- Melting point
- 4,041 °C
- Boiling point
- 8,316 °C
- Discovered
- 1922
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q1119
Minerals containing this element · 1
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Hafnon | HfSiO₄ | Tetragonal | 7.5 | 7.02 g/cm³ |