Chromium (Cr)

Atomic Number: 24

Relative Atomic Mass: 51.99616

Electronegativity: 1.66


Atomic Radius (Picometers): 140


Appearance: Silver


Occurrence: Natural

Melting Point (Kelvin): 2180

Boiling Point (Kelvin): 2944


Stable Isotopes: 52, 53, 54

Discoverer: Louis Nicolas Vauquelin in 1797

Properties: Hard, Brittle

First Use: Weapons (3rd Century BC)

Modern Uses: Polish, Dye

Picture Courtesy of Alchemist-hp


©2011 Grant Dwyer