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Iridium

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name Iridium
latin Iridium
french Iridium
german Iridium
symbol Ir
proton number 77
atomic weight 192.217
Pauling electronegativity 2.2
electronic configuration [Xe] 4f145d76s2
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melting point 2739 K, 2466°C, 4471°F
boiling point 4701 K, 4428°C, 8002°F
group 9
period 6
state (by 20°C) solid
oxidation states +2, +3, +4, +6
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Discoverer

Year of discovery Discoverer
1804 Smithson Tennant (1761-1815)

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