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Iridium
(Ir)
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2
8
18
32
15
2
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Ir
Category
Transition metal
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Relative atomic mass
192.22
Density
22.42
Melting point (°C)
2446
Boiling point (°C)
4428
Electronegativity (Pauling)
2.2
Discovery year
1803
Discovered by
Smithson Tennant
Electrons: 77
Protons: 77
Neutrons: 115
Wikipedia
created by @lukaswyss
Iridium (Ir) – Element 77
