Osmium

Transition metal

Symbol: Os

Atomic Number: 76

Standard State: Solid

Atomic Mass: 190.2

Electron Configuration: [Xe]6s2 4f14 5d6

Electronegativity: 2.2

Atomic Radius: 216

Ionization Energy: 8.7

Melting Point: 3306

Boiling Point: 5285

Density: 22.57

Year Discovered: 1803