56
Barium
Atomic Number56
Atomic Mass137.33 u
CategoryAlkaline Earth
State at Room TempSolid
Year Discovered1808
About Barium
Barium sulfate is used in barium meals to image the digestive tract. Barium compounds produce green colors in fireworks. The barium enema was a standard diagnostic procedure before CT scans. Barium titanate is an important piezoelectric material. All barium compounds that dissolve in water or acid are toxic. The name comes from the Greek barys meaning heavy.
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