Rubidium (Rb)

Atomic Number: 37

Relative Atomic Mass: 85.46783

Electronegativity: 0.82

Atomic Radius (Picometers): 235

Appearance: Grey-White

Occurrence: Natural

Melting Point (Kelvin): 312.46

Boiling Point (Kelvin): 961

Stable Isotopes: 85

Discoverer: Robert Bunsen in 1861

Properties: Soft, Ductile

First Use: Unknown

Modern Uses: Fireworks, Atomic Clocks

Picture Courtesy of Dnn87

©2011 Grant Dwyer