Hafnium |
| Simbool | Hf |
|---|---|
| Latynse naam | Hafnium |
| Atoomgetal | 72 |
| Periode | 6 |
| Element kategorie | Oorgangselemente |
| Relatieve atomiese massa | 178.49 |
| Groep | IV.B |
| Electronegativiteit | 1.3 |
| Oksidering nommers | 4 |
| Elektronkonfigurasie | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d2 6s2 |
| Digtheid [g/cm3] | 13.3 |
| Staat | Vaste stof |
| Smeltpunt [°C] | 2227 |
| Kookpunt [°C] | 4600 |
| Atoomradius [pm] | 208 |
| Covalent radius [pm] | 150 |
| Termiese geleidingsvermoë [W m-1K-1] | 23 |
| Hitte kapasiteit [J K-1g-1] | 0.14 |
| Ontdekking | 1864 |
| Hardheid [Mohs-skaal] | 5.5 |
| Vickers se hardheid [MPa] | 1760 |
| Brinell-hardheid [MPa] | 1700 |
| Young's modulus [GPa] | 78 |
| Elektriese geleiding [S m-1] | 3.3 · 106 |
| Shear modulus [GPa] | 30 |
| 1ste ionisasie-energie [eV] | 6.8251 |
| 2de ionisasie-energie [eV] | 14.925 |
| 3de ionisasie-energie [eV] | 23.32 |
| Stabiele isotope | 6 |
| Onstabiele isotope | 15 |