Cobalt (Co)

Atomic Number: 27

Relative Atomic Mass: 58.9331955

Electronegativity: 1.88

Atomic Radius (Picometers): 135

Appearance: Lustrous Grey

Occurrence: Natural

Melting Point (Kelvin): 1768

Boiling Point (Kelvin): 3200

Stable Isotopes: 59

Discoverer: Georg Brandt in 1732

Properties: Ferromagnetic, Hard

First Use: Jewelry (3rd Millennium BC)

Modern Uses: Radioisotopes, Electroplating

Picture Courtesy of Alchemist-hp

©2011 Grant Dwyer