Ir

Electrons: 2-8-18-32-15-2
Oxidation States: +3+4
Atomic Weight: 192.217
Phase: Solid
M.P.: 2719 K
(2446 °C, 4435 °F)
B.P.: 4701 K
(4428 °C, 8002 °F)

Occurrence: 2.16x10-9%
Iridium is notable for being the most corrosion resistant element known and for its association with the demise of the dinosaurs, in the form of a meteorite strike.