Holmium |
| Simbool | Ho |
|---|---|
| Latynse naam | Holmium |
| Atoomgetal | 67 |
| Periode | 6 |
| Element kategorie | Innerlike oorgangselemente |
| Relatieve atomiese massa | 164.93032 |
| Groep | III.B |
| Electronegativiteit | 1.2 |
| Oksidering nommers | 3 |
| Elektronkonfigurasie | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f11 5d0 6s2 |
| Digtheid [g/cm3] | 8.8 |
| Staat | Vaste stof |
| Smeltpunt [°C] | 1474 |
| Kookpunt [°C] | 2695 |
| Atoomradius [pm] | 175 |
| Covalent radius [pm] | 192 |
| Termiese geleidingsvermoë [W m-1K-1] | 16.2 |
| Hitte kapasiteit [J K-1g-1] | 0.165 |
| Ontdekking | 1879 |
| Vickers se hardheid [MPa] | 481 |
| Brinell-hardheid [MPa] | 746 |
| Young's modulus [GPa] | 65 |
| Elektriese geleiding [S m-1] | 1.1 · 106 |
| Shear modulus [GPa] | 26 |
| 1ste ionisasie-energie [eV] | 6.0216 |
| 2de ionisasie-energie [eV] | 11.805 |
| 3de ionisasie-energie [eV] | 22.843 |
| Stabiele isotope | 1 |
| Onstabiele isotope | 28 |