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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.