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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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Periodic Table of the Elements: Phosphorus

Periodic Table of the Elements: Phosphorus

Periodic Table of the Elements: Phosphorus
Atomic Number: 15
Atomic Symbol: P
  Phosphorus
Atomic Weight: 30.97376
Electron Configuration: 2 · 8 · 5

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"Periodic Table of the Elements: Phosphorus." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 19 Jul. 2017 <http://www.encyclopedia.com>.

"Periodic Table of the Elements: Phosphorus." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (July 19, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/periodic-table-elements-phosphorus

"Periodic Table of the Elements: Phosphorus." The Columbia Encyclopedia, 6th ed.. . Retrieved July 19, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/periodic-table-elements-phosphorus