Basic Information

Name: Cobalt 
Symbol: Co 
Atomic Number: 27 
Atomic Mass: 58.9332 amu 
Melting Point: 1495.0 °C (1768.15 K, 2723.0 °F) 
Boiling Point: 2870.0 °C (3143.15 K, 5198.0 °F) 
Number of Protons/Electrons: 27 
Number of Neutrons: 32 
Classification: Transition Metal 
Crystal Structure: Hexagonal 
Density @ 293 K: 8.9 g/cm3 
Color: silver
Date of Discovery: 1737 
Discoverer: George Brandt 
Name Origin: From the German word kobalt or kobold (evil spirit) 
Uses: magnets, ceramics, special glasses 
Obtained From: arsenic, oxygen, sulfur, cobaltine