Basic Information

Name: Osmium 
Symbol: Os 
Atomic Number: 76 
Atomic Mass: 190.23 amu 
Melting Point: 3045.0 °C (3318.15 K, 5513.0 °F) 
Boiling Point: 5027.0 °C (5300.15 K, 9080.6 °F) 
Number of Protons/Electrons: 76 
Number of Neutrons: 114 
Classification: Transition Metal 
Crystal Structure: Hexagonal 
Density @ 293 K: 22.4 g/cm3 
Color: silvery
Date of Discovery: 1803 
Discoverer: Smithson Tenant 
Name Origin: From the Greek word osmë (odor) 
Uses: tip gold pen points, instrument pivots, electrical light filaments 
Obtained From: ores that contain platinum