Iridium

Transition metal

Symbol: Ir

Atomic Number: 77

Standard State: Solid

Atomic Mass: 192.22

Electron Configuration: [Xe]6s2 4f14 5d7

Electronegativity: 2.2

Atomic Radius: 202

Ionization Energy: 9.1

Melting Point: 2719

Boiling Point: 4701

Density: 22.42

Year Discovered: 1803