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bismuth
bismuth [Ger. Weisse Masse =white mass], metallic chemical element; symbol Bi; at. no. 83; at. wt. 208.98040; m.p. 271.3°C; b.p. about 1,560°C; sp. gr. 9.75 at 20°C; valence +3 or +5. Bismuth is a silver-white, reddish-tinged, brittle metallic element with a rhombohedral crystalline structure. It exhibits more metallic properties than the other members of Group 15 of the periodic table . It occurs free in nature to a small extent. Bismuth does not tarnish in air, but when heated it burns to form yellow fumes of the trioxide. It reacts with the halogens and with sulfur and is dissolved in nitric acid and hot sulfuric acid. Its soluble compounds are poisonous, but some of its insoluble compounds are used in medicine to treat certain gastric disorders and skin injuries. Bismuth is the poorest heat conductor of all the metals except mercury; it is the most diamagnetic of all metals. The major ores of bismuth, bismuthinite (the sulfide), also called bismuth glance, and bismite (the oxide), are found extensively in South America but are rare in the United States, where bismuth is obtained as a byproduct of lead and copper refining. Bismuth expands upon solidification; this unusual property makes it useful in type-metal alloys and for castings. The most important use of bismuth is in the manufacture of low-melting alloys, such as Wood's metal, used in electrical fuses and in automatic fire alarm and sprinkler systems. Bismuth was recognized as a metal by early observers, including Georg Agricola, in the 16th cent., but was believed to be a kind of lead or tin until Claud J. Geoffroy established it as a separate element in 1753. |
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"bismuth." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "bismuth." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1E1-bismuth.html "bismuth." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-bismuth.html |
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bismuth
bismuth (symbol Bi) Metallic, silvery-white element of group V of the periodic table, first identified as a separate element in 1753. The chief ores are bismite (Bi2O3) and bismuthnite (Bi2S3). A poor heat conductor, it is put into low-melting alloys for automatic sprinkler systems. Bismuth is also used in insoluble compounds to treat gastric ulcers and skin injuries. It expands when it solidifies, a property exploited in several bismuth alloys for castings. Properties: at.no. 83; r.a.m. 208.98; r.d. 9.75; m.p. 271.3°C (520.3°F); b.p. 1560°C (2840°F); most common isotope Bi209 (100%).
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"bismuth." World Encyclopedia. 2005. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "bismuth." World Encyclopedia. 2005. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O142-bismuth.html "bismuth." World Encyclopedia. 2005. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-bismuth.html |
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bismuth
bis·muth / ˈbizmə[unvoicedth]/ • n. the chemical element of atomic number 83, a brittle reddish-gray metal. (Symbol: Bi) ∎ a compound of this element used medicinally. |
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"bismuth." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "bismuth." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O999-bismuth.html "bismuth." The Oxford Pocket Dictionary of Current English. 2009. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-bismuth.html |
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bismuth
bismuth (biz-mŭth) n. a white metallic element. Its salts are used in some antacid mixtures and as protective agents in skin powders and pastes. They were formerly widely used in the treatment of syphilis. Symbol: Bi.
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"bismuth." A Dictionary of Nursing. 2008. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "bismuth." A Dictionary of Nursing. 2008. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O62-bismuth.html "bismuth." A Dictionary of Nursing. 2008. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-bismuth.html |
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bismuth
bismuth XVII (bismute). — modL. bisemutum, latinization of G. wismut, of unkn. orig.
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T. F. HOAD. "bismuth." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. T. F. HOAD. "bismuth." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O27-bismuth.html T. F. HOAD. "bismuth." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-bismuth.html |
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bismuth
bismuth
•Goliath • Haworth • sabbath
•Elizabeth • mammoth • Dartmouth
•Weymouth • behemoth • Plymouth
•Sidmouth • bismuth • azimuth
•Monmouth • Bournemouth
•Portsmouth • vermouth
•pennyworth • Elspeth • ha'p'orth
•Morpeth • Gareth • Nazareth
•Tamworth • Hayworth • Woolworth
•Wordsworth
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"bismuth." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "bismuth." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O233-bismuth.html "bismuth." Oxford Dictionary of Rhymes. 2007. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-bismuth.html |
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