BARIUM
\bˈe͡əɹi͡əm], \bˈeəɹiəm], \b_ˈeə_ɹ_iə_m]\
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By Princeton University
By DataStellar Co., Ltd
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An element of the alkaline earth group of metals. It has an atomic symbol Ba, atomic number 56, and atomic weight 138. All of its acid-soluble salts are poisonous.
By DataStellar Co., Ltd
By Robley Dunglison
By Willam Alexander Newman Dorland