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Argon

Symbol: Ar
Atomic Mass/Weight: 39.948 AMU
Atomic Number: 18
Oxidation State: Element is FULL; Satisfied; Therefore, no monatomic ion!
Melting Point: 83.81 K
Boiling Point: 87.30 K
# of Isotopes: 3
Electron Configuration: [Ne] 3s2 3p6
Lewis Dot Diagram:
Argon - Lewis Dot Diagram