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Helium

Symbol: He
Atomic Mass/Weight: 4.00260 AMU
Atomic Number: 2
Oxidation State: Element is FULL; Satisfied; Therefore, no monatomic ion!
Melting Point: 0.95 K (26 ATM)
Boiling Point: 4.215 K
# of Isotopes: 2
Electron Configuration: 1s2
Lewis Dot Diagram:
Helium - Lewis Dot Diagram