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Er
Erbium
#68 · Lanthanide
| I-Mass | 167.26 u |
| Uxinano | 9.066 g/cm³ |
| Uthuthu | 1802.0 K |
| Ukomisa | 3141.0 K |
| Electronegativity | 1.24 |
| Ionization energy | 589.3 kJ/mol |
| Atomic radius: | 176.0 pm |
| I-Block | f- iblock |
| Ilizwe (RT) | I-Solid |
| Qwalasela | [Xe] 4f12 6s2 |