Chemical Elements History and Information Barium

About the chemical element Barium, its symbol, atomic number and weight, who discovered it and when.

The Atomic Elements and Their Uses

(Element) (Symbol) (Atomic number) (Atomic weight)

Barium Ba 56 137.33

Karl Scheele of Sweden identified it as an element in 1774, and Sir Humphry Davy of England isolated it in 1808. Because barium is opaque to short wavelength radiation, a barium sulfate enema is often administered prior to intestinal X rays.

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