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barium
[ bair-ee-uhm, bar- ]
noun
, Chemistry.
- a whitish, malleable, active, divalent, metallic element, occurring in combination chiefly as barite or as witherite. : Ba; : 137.34; : 56; : 3.5 at 20°C.
barium
/ ˈbɛərɪəm /
noun
- a soft silvery-white metallic element of the alkaline earth group. It is used in bearing alloys and compounds are used as pigments. Symbol: Ba; atomic no: 56; atomic wt: 137.327; valency: 2; relative density: 3.5; melting pt: 729°C; boiling pt: 1805°C
barium
/ bâr′ē-əm /
- A soft, silvery-white metallic element of the alkaline-earth group. It occurs only in combination with other elements, especially in barite. Barium compounds are used in x-raying the digestive system and in making fireworks and white pigments. Atomic number 56; atomic weight 137.33; melting point 725°C; boiling point 1,140°C; specific gravity 3.50; valence 2.
- See Periodic Table
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Word History and Origins
Origin of barium1
C19: from bar ( yta ) + -ium
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Example Sentences
Barium and sodium salts were made by neutralizing the acid, and were purified by crystallization.
From Project Gutenberg
It was then evaporated to a small bulk, neutralized with barium carbonate and extracted with ether.
From Project Gutenberg
The excess of lead was removed by sulphuric acid, and the sulphuric acid was removed by barium carbonate.
From Project Gutenberg
By warming with alkalies or barium hydroxide, rhamnose is colored yellow.
From Project Gutenberg
The described change in ionization can be roughly followed with the aid of an insoluble sulphate like barium sulphate.
From Project Gutenberg
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