Erbium
Electron Configuration
|
General Properties
| Atomic Symbol | Er |
| Atomic Weight | 167.26 g/mol |
| Element Number | 68 |
| Standard State | Solid |
| Standard Type | Strongly Basic |
| Date of Discovery | 1843 |
| Discoverer | Mosander |
Physical Properties
| Oxidation States | 3 |
| Boiling Point | 3140 K |
| Melting Point | 1802 K |
| Density | 9.07 g/cm³ |
| Electron Configuration | [Xe]4f12,6s2 |
| Acid/Base Properties | Basic |
| Crystal Structure | Hexagonal |
| Electronegativity | 1.24 |
| Heat of Vaporization | 292.88 kJ/mol |
| Heat of Fusion | 17.15 kJ/mol |
| Electrical Conductivity | 1.2 10^6omg-¹cm-¹ |
| Thermal Conductivity | 14.3 Wm-¹K-¹ (at 300 K) |
| Specific Heat Capacity | 0.168 Jg-¹K-¹ (at 300 K) |
| First Ionization Potential | 6.101 |
| Atomic Volume | 18.4 cm³/mol |
| Atomic Radius | 1.78 Å |
| Covalent Radius | 1.57 Å |
| Synthetic | No |