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- Mendelevium
- Energy Levels of Erbium
- Po (Symbol of Polonium)
- 114 (Atomic Number of Flerovium)
- Atomic Mass of Fluorine in lb
Eu
Europium
[Xe] 4f⁷ 6s²
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f7 6s2
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