Holmium
Electron Configuration
![]() |
General Properties
| Atomic Symbol | Ho |
| Atomic Weight | 164.9303 g/mol |
| Element Number | 67 |
| Standard State | Strongly Basic |
| Standard Type | Solid |
| Date of Discovery | 1879 |
| Discoverer | Cleve |
Physical Properties
| Oxidation States | 3 |
| Boiling Point | 2968 K |
| Melting Point | 1747 K |
| Density | 8.80 g/cm³ |
| Electron Configuration | [Xe]4f11,6s2 |
| Acid/Base Properties | Basic |
| Crystal Structure | Hexagonal |
| Electronegativity | 1.23 |
| Heat of Vaporization | 251.04 kJ/mol |
| Heat of Fusion | 17.15 kJ/mol |
| Electrical Conductivity | 1.1 10^6omg-¹cm-¹ |
| Thermal Conductivity | 16.2 Wm-¹K-¹ (at 300 K) |
| Specific Heat Capacity | 0.165 Jg-¹K-¹ (at 300 K) |
| First Ionization Potential | 6.02 |
| Atomic Volume | 18.7 cm³/mol |
| Atomic Radius | 1.79 Å |
| Covalent Radius | 1.58 Å |
| Synthetic | No |