• Natural nitrogen (7N) consists of two stable isotopes: the vast majority (99.6%) of naturally occurring nitrogen is nitrogen-14, with the remainder being...
    14 KB (1,076 words) - 18:21, 2 April 2024
  • Thumbnail for Nitrogen
    Nitrogen is a chemical element; it has symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table...
    105 KB (12,223 words) - 09:57, 12 September 2024
  • Thumbnail for Nitrogen cycle
    The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmospheric, terrestrial...
    57 KB (6,216 words) - 17:58, 11 September 2024
  • Thumbnail for Carbon-14
    or 164.9 GBq/g. Carbon-14 decays into nitrogen-14 (14 N) through beta decay. A gram of carbon containing 1 atom of carbon-14 per 1012 atoms will emit...
    38 KB (4,206 words) - 11:28, 17 July 2024
  • Nitrogen fixation is a chemical process by which molecular dinitrogen (N 2) is converted into ammonia (NH 3). It occurs both biologically and abiologically...
    47 KB (4,983 words) - 18:36, 13 September 2024
  • Thumbnail for Nitrogen dioxide
    Nitrogen dioxide is a chemical compound with the formula NO2. One of several nitrogen oxides, nitrogen dioxide is a reddish-brown gas. It is a paramagnetic...
    28 KB (2,640 words) - 11:39, 23 May 2024
  • Thumbnail for Blood urea nitrogen
    Blood urea nitrogen (BUN) is a medical test that measures the amount of urea nitrogen found in blood. The liver produces urea in the urea cycle as a waste...
    5 KB (635 words) - 22:04, 4 September 2024
  • Thumbnail for Solid nitrogen
    Solid nitrogen is a number of solid forms of the element nitrogen, first observed in 1884. Solid nitrogen is mainly the subject of academic research,...
    50 KB (5,941 words) - 03:33, 2 August 2024
  • Thumbnail for Nitrogen narcosis
    Narcosis while diving (also known as nitrogen narcosis, inert gas narcosis, raptures of the deep, Martini effect) is a reversible alteration in consciousness...
    55 KB (5,601 words) - 15:33, 8 September 2024
  • Thumbnail for CNO cycle
    The CNO cycle (for carbon–nitrogen–oxygen; sometimes called Bethe–Weizsäcker cycle after Hans Albrecht Bethe and Carl Friedrich von Weizsäcker) is one...
    36 KB (2,527 words) - 18:32, 16 July 2024