| Property | Value |
|---|---|
| Atomic number | 67 |
| Atomic weight | 164.930322 amu |
| Element family | N/A |
| Electronic configuration | 1s2 |
| Stable and very long lived isotopes | 165Ho: 100% |
| Previous element | Dysprosium |
| Next element | Erbium |
| Density | 8.795 g/cm3 (STP) |
| Melting | 1470 °C |
| Boiling | 2720 °C |
| Covalent radius | 1.66 Å |
| Ionic radius | 0.901 Å |
| Metallic radius | 1.762 Å |
| First ionization potential | 6.021 eV |
| Electron affinity | 0.338 eV |
| Electronegativity | 1.23 |
| Discovery year | 1878 |
Holmium is an element number 67 from n/a family. Its symbol is Ho. Holmium atomic weight is 164.930322 amu. Ho stable and long lived isotopes are 165Ho: 100%. Holmium electronic configuration is 1s22s22p63s23p63d104s24p64d105s25p66s24f11. Holmium density is 8.795 g/cm3 (STP). Holmium melting point is 1470 °C. Holmium boiling point is 2720 °C. Holmium covalent radius is 1.66 Å. Holmium ionic radius is 0.901 Å. Holmium covalent radius is 1.762 Å. Holmium first ionization potential is 6.021 eV. Holmium first ionization potential is 0.338 eV. Holmium electronegativity by Pauling scale is 1.23. Holmium was discovered in 1878.
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