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nitrogen

nitrogen (symbol N) Common, gaseous nonmetallic element of group V of the periodic table. Colourless and odourless, it is the major component of the atmosphere (78% by volume), from which it is extracted by fractional distillation of liquid air. It is necessary for life, being present in all plants and animals. English chemist Daniel Rutherford (1749–1819) isolated it in 1772. The main industrial use is in the Haber process. Nitrogen compounds are used in fertilizers, explosives, dyes, foods and drugs. The element is chemically inert. Properties: at.no. 7; r.a.m. 14.0067; r.d. 1.2506; m.p. −209.86°C (−345.75°F); b.p. −195.8°C (−320.4°F); most common isotope N14 (99.76%).

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Periodic Table of the Elements: Nitrogen

Periodic Table of the Elements: Nitrogen

Periodic Table of the Elements: Nitrogen
Atomic Number: 7
Atomic Symbol: N
  Nitrogen
Atomic Weight: [14.00643; 14.00728]
Electron Configuration: 2 · 5

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"Periodic Table of the Elements: Nitrogen." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 17 Aug. 2017 <http://www.encyclopedia.com>.

"Periodic Table of the Elements: Nitrogen." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (August 17, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/periodic-table-elements-nitrogen

"Periodic Table of the Elements: Nitrogen." The Columbia Encyclopedia, 6th ed.. . Retrieved August 17, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/periodic-table-elements-nitrogen