76   Os   190.230000 Osmium

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Name: Osmium
Symbol: Os
Atomic Number: 76
AtomicWeight: 190.230000
Family: transition metals
CAS RN: 7440-04-2
Description: A bluish white, extremely hard, and brittle metal, a member of the platinum group
State (25 ° C): Solid
Oxidation states: +3,+4
Valence Electrons: 5d⁶6s²

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