Hafnium — Hf
The chemical element Hafnium is an element of type Transition metal with the symbol Hf. It has an atomic mass of 178.49 u and an electronic configuration of [Xe] 4f14 5d2 6s2.
Synthétique
Radioactif
Liquide
Gaz
5400°
3
4
8
18
32
10
2
- Atomic number
- 72
- Atomic mass
- 178.49
- Symbol
- Hf
- Melting point
- 2150
- Boiling point
- 5400
- Density
- 13.31
- Period
- 6
- Group
- 4
- Discovery
- 1923 Coster and von Hevesy
- Abundance
- 3
- Radius
- 2.2
- Electronegativity
- 1.3
- Ionization
- 6.8251
- Isotope
- 17
- Electronic configuration
- [Xe] 4f14 5d2 6s2
- Oxidation state
- 2,3,4
- Electron
- 2,8,18,32,10,2
Minerals containing Hafnium
| first name | Hardness | Density | Chemical formula |
|---|---|---|---|
| Allendeite | — | 4.84 | Sc4Zr3O12 |
| Bobtraillite | — | 3.16 | (Na,Ca)13Sr11(Zr,Y,Nb)14Si42B6O132(OH)12·12H2O |
| Dovyrenite | — | 3.03 | Ca6Zr(Si2O7)2(OH)4 |
| Feklichevite | — | 2.87 | Na11Ca9(Fe3+,Fe2+)2Zr3Nb(Si25O73)(OH,H2O,Cl,O)5 |
| Ferrokentbrooksite | — | 3.06 | Na15Ca6Fe2+3Zr3Nb(Si25O73)(O,OH,H2O)3(F,Cl)2 |
| Georgbarsanovite | — | 3.05 | Na12(Mn,Sr,REE)3Ca6Fe2+3Zr3NbSi25O76Cl2·H2O |
| Hafnon | — | 6.97 | HfSiO4 |
| Ikranite | — | 2.82 | (Na,H3O)15(Ca,Mn,REE)6Fe3+2Zr3Si24O66(O,OH)6Cl·nH2O |
| Johnsenite-(Ce) | — | 3.20 | Na12Ce3Ca6Mn3Zr3WSi25O73(CO3)(OH)2 |
| Kochite | — | 3.32 | Na(Na,Ca)2Ca2(Mn,Ca)ZrTi(Si2O7)2(F,O)4 |
| Lakargiite | — | 4.59 | CaZrO3 |
| Marianoite | — | 3.32 | Na2Ca4(Nb,Zr)2(Si2O7)2(O,F)4 |
| Taseqite | — | 3.24 | Na12Sr3Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2 |
| Voronkovite | — | 2.97 | Na15(Na,Ca,Ce)3(Mn,Ca)3Fe3Zr3Si26O72(OH,O)4Cl·H2O |
| Zircon | — | 4.60 | ZrSiO4 |