Facts about the Classification of the Element Iridium
Iridium is classified as a "Transition Metal" which are located in Groups 3 - 12 of the Periodic Table. An Element classified as a Transition Metals is ductile, malleable, and able to conduct electricity and heat.

Brief Facts about the Discovery and History of the Element Iridium
Iridium was discovered by Smithson Tennant in London, England in 1803

Occurrence of the element Iridium
The Earth's core is rich in iridium. It's obtained from gravel deposits with platinum

Common Uses of Iridium
Hardening agent in platinum alloys
Fountain pen nibs
Making crucibles
Electrical contacts
Spark plugs
Phones
Goggles
Denso iridium

The Properties of the Element Iridium
Name of Element : Iridium
Symbol of Element : Ir
Atomic Number of Iridium : 77
Atomic Mass: 192.217 amu
Melting Point: 2410.0 °C - 2683.15 °K
Boiling Point: 4527.0 °C - 4800.15 °K
Number of Protons/Electrons in Iridium : 77
Number of Neutrons in Iridium : 115
Crystal Structure: Cubic
Density @ 293 K: 22.5 g/cm3
Color of Iridium : whitish-yellow