Periodic Table Facts
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Periodic Table
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Lithium
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Alkali Earth Metals
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Beryllium
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Barium
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Elements 21-25
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Elements 26-30
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Our Picture Gallery
BARIUM
Name: Barium
Symbol: Ba
Atomic Number: 56
Barium is a metal used for vacuum tubes (to make them more vacuumy) and barium sulfate (they are seen by x-rays so they can be used if you have digestive issues).