Barium

Barium
Properties
Atomic symbol	Ba
Atomic number	56
Classification	Alkaline Earth
Atomic mass	137.3 amu
Other Information
Date of discovery	1808
Name of discoverer	Sir Humphrey Davy
Name origin	From the Greek barys, meaning heavy.
Uses	Ingestion of barium is used in radiography to allow the alimentary canal to be viewed by x-ray.
Obtained from	Barytine or Whiterite.

Barium is a soft, silvery metal which is highly reactive.