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Promethium
(Synthetically Prepared)

Symbol: Pm
Atomic Mass/Weight: 145 AMU
Atomic Number: 61
Oxidation State: +3
Melting Point: 1204 K
Boiling Point: 3785 K
# of Isotopes: 1
Electron Configuration: [Xe] 4f5 6s2
Lewis Dot Diagram:
Promethium - Lewis Dot Diagram