Atomic Number:	76
Atomic Symbol:	Os
Atomic Weight:	190.2
Electron Configuration:	[Xe]6s24f145d6

Osmium metal is lustrous, bluish white, extremely hard, and brittle even at high temperatures. It has the highest melting point and lowest vapour pressure of the platinum group. The metal is very difficult to fabricate, but the powder can be sintered in a hydrogen atmosphere at a temperature of 2000°C. The solid metal is not affected by air at room temperature, but the powdered or spongy metal slowly gives off osmium tetroxide, which is a powerful oxidising agent and has a strong smell. The tetroxide is highly toxic. Low concentrations in air as can cause lung congestion, skin damage, or eye damage.