Discovery of Barium
Barium, atomic number 56, has a mass of 137.327 au.
Barium is a Group 2 element, and these are called: "alkaline earth metals".
Barium was first observed or predicted in 1772 by W. Scheele and first isolated in 1808 by H. Davy.
|Periodic Table, What is it showing?||
© Mark R. Leach 1999-
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