Periodic Table of the Elements: Barium

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Periodic Table of the Elements: Barium
Atomic Number:56
Atomic Symbol:Ba
 Bariumbarium
[Gr.,=heavy], metallic chemical element; symbol Ba; at. no. 56; at. wt. 137.327; m.p. 725°C;; b.p. 1,640°C;; sp. gr. 3.5 at 20°C;; valence +2. Barium is a soft, silver-white, chemically active, poisonous metal with a face-centered cubic crystalline structure.
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Atomic Weight:137.327
Electron Configuration:2 · 8 · 18 18 · 8 · 2
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