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Er
Erbium
#68 · Lanthanide
| Mass | 167.26 u |
| Density | 9.066 g/cm³ |
| Melting | 1802.0 K |
| Boiling | 3141.0 K |
| Electronegativity | 1.24 |
| Ionization Energy | 589.3 kJ/mol |
| Atomic Radius | 176.0 pm |
| Block | f-block |
| State (RT) | Solid |
| Config | [Xe] 4f12 6s2 |