77   Ir   192.217000 Iridium

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Name: Iridium
Symbol: Ir
Atomic Number: 77
AtomicWeight: 192.217000
Family: transition metals
CAS RN: 7439-88-5
Description: A silvery white very hard and brittle metal
State (25 ° C): Solid
Oxidation states: +3,+4
Valence Electrons: 5d⁷6s²

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