nitrogen
nitrogen
Symbol: N
Atomic number: 7
Atomic weight: 14.0067
Colourless, gaseous element which belongs to group 15 of the periodic table. Constitutes nitrogen78% of the atmosphere and is an essential part of the ecosystem. Nitrogen for industrial purposes is acquired by the fractional distillation of liquid air. Chemically inactive, reactive generally only at high temperatures or in electrical discharges. It was discovered in 1772 by D. Rutherford.

Elements of periodic system. 2013.

  • nitrogen — s.m. (chim.) Azot. – Din fr. nitrogène. Trimis de cata, 21.02.2002. Sursa: DEX 98  NITROGÉN s. v. azot. Trimis de siveco, 13.09.2007. Sursa: Sinonime  nitrogén s. m. (sil. tro ); simb. N …   Dicționar Român

  • Nitrogen — Ni tro*gen (n[imac] tr[ o]*j[e^]n), n. [L. nitrum natron + gen: cf. F. nitrog[ e]ne. See {Niter}.] (Chem.) A colorless nonmetallic element of atomic number 7, tasteless and odorless, comprising four fifths of the atmosphere by volume in the form… …   The Collaborative International Dictionary of English

  • Nitrogen — (kvælstof) er et grundstof med atomnummer 7 i det periodiske system. Farveløs gas, findes blandt andet i Jordens atmosfære som frit N2 molekyle …   Danske encyklopædi

  • nitrogen — (n.) 1794, from Fr. nitrogène, coined 1790 by French chemist Jean Antoine Chaptal (1756 1832), from comb. form of Gk. nitron sodium carbonate (see NITRO (Cf. nitro )) + Fr. gène producing, from Gk. gen giving birth to (see GEN (Cf. gen)). The gas …   Etymology dictionary

  • nitrogen — nȉtrogēn m DEFINICIJA kem., v. dušik ETIMOLOGIJA nitro + gen …   Hrvatski jezični portal

  • nitrogen — ► NOUN ▪ a colourless, odourless, relatively unreactive gaseous chemical element, forming about 78 per cent of the earth s atmosphere. DERIVATIVES nitrogenous adjective …   English terms dictionary

  • nitrogen — [nī′trə jən] n. [Fr nitrogène: so named (1790) by J. A. Chaptal (1756 1832), Fr chemist < Gr nitron (see NITER) + Fr gène, GEN, because niter resulted when it was sparked with oxygen in the presence of caustic potash] a colorless, tasteless,… …   English World dictionary

  • Nitrogen — carbon ← nitrogen → oxygen ↑ N ↓ P …   Wikipedia

  • nitrogen — /nuy treuh jeuhn/, n. Chem. a colorless, odorless, gaseous element that constitutes about four fifths of the volume of the atmosphere and is present in combined form in animal and vegetable tissues, esp. in proteins: used chiefly in the… …   Universalium

  • nitrogen — n. Chem. a colourless tasteless odourless gaseous element that forms four fifths of the atmosphere and is an essential constituent of proteins and nucleic acids. Usage: Symb.: N. Phrases and idioms: nitrogen cycle the interconversion of nitrogen… …   Useful english dictionary