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phosphorus
phosphorus (symbol P) Common nonmetallic element of group V of the periodic table, discovered in 1669 by German alchemist Hennig Brand (born c. 1630). It occurs (as phosphates) in many minerals; apatite being the chief source. The element is used in making phosphoric acid for detergents and fertilizers. Small amounts are used in insecticides and in matches. Phosphorus exhibits allotropy. Properties: at.no. 15; r.a.m. 30.9738; r.d. 1.82 (white), 2.34 (red); m.p. 44.1°C (111.38°F) (white); b.p. 280°C (536°F) (white); most common isotope P31 (100%).
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"phosphorus." World Encyclopedia. 2005. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>. "phosphorus." World Encyclopedia. 2005. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O142-phosphorus.html "phosphorus." World Encyclopedia. 2005. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-phosphorus.html |
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Periodic Table of the Elements: Phosphorus
Periodic Table of the Elements: Phosphorus
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Cite this article
"Periodic Table of the Elements: Phosphorus." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>. "Periodic Table of the Elements: Phosphorus." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1E1-P-ptblTABLE.html "Periodic Table of the Elements: Phosphorus." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-P-ptblTABLE.html |
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