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Osmium

Symbol: Os
Atomic Mass/Weight: 190.2 AMU
Atomic Number: 76
Oxidation State (Bold Most Stable):  +4,+2,+3,+6,+8
Melting Point: 3300 K
Boiling Point: 5285 K
# of Isotopes: 7
Electron Configuration: [Xe] 4f14 5d7 6s2
Lewis Dot Diagram:
Osmium - Lewis Dot Diagram