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nitrogen    音标拼音: [n'ɑɪtrədʒən]
n. U氮

U氮

nitrogen
n 1: a common nonmetallic element that is normally a colorless
odorless tasteless inert diatomic gas; constitutes 78
percent of the atmosphere by volume; a constituent of all
living tissues [synonym: {nitrogen}, {N}, {atomic number 7}]

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 of molecular nitrogen ({N2}). It is
chemically very inert in the free state, and as such is
incapable of supporting life (hence the name {azote} still
used by French chemists); but it forms many important
compounds, such as ammonia, nitric acid, the cyanides, etc,
and is a constituent of all organized living tissues, animal
or vegetable. Symbol N. Atomic weight 14.007. It was formerly
regarded as a permanent noncondensible gas, but was liquefied
in 1877 by Cailletet of Paris, and Pictet of Geneva, and
boils at -195.8 [deg] C at atmospheric pressure. Liquid
nitrogen is used as a refrigerant to store delicate
materials, such as bacteria, cells, and other biological
materials.
[1913 Webster PJC]

46 Moby Thesaurus words for "nitrogen":
acetylene, ammonia, argon, asphyxiating gas, butane,
carbon dioxide, carbon monoxide, castor-bean meal, chlorine,
coal gas, commercial fertilizer, compost, dressing, dung,
enrichener, ethane, ether, ethylene, fertilizer, fluorine,
formaldehyde, guano, helium, hydrogen, illuminating gas, krypton,
lewisite, manure, marsh gas, methane, muck, mustard gas,
natural gas, neon, night soil, nitrate, organic fertilizer, oxygen,
ozone, phosphate, poison gas, propane, radon, sewer gas,
superphosphate, xenon

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  • Nitrogen - Wikipedia
    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, often called the pnictogens It is a common element in the universe, estimated at seventh in total abundance in the Milky Way and the Solar System
  • Nitrogen | Definition, Symbol, Uses, Properties, Atomic Number, Facts . . .
    Nitrogen, nonmetallic element of Group 15 [Va] of the periodic table It is a colorless, odorless, tasteless gas that is the most plentiful element in Earth’s atmosphere and is a constituent of all living matter Its atomic number is 7 and it is denoted by the symbol ‘N’ in the periodic table
  • What Are the Uses of Nitrogen in Everyday Life? - ScienceInsights
    Nitrogen, a colorless and odorless gas, makes up 78% of Earth’s atmosphere, making it the most abundant element in the air we breathe Despite its pervasive presence, this element is remarkably inert, meaning it does not readily react with other substances
  • Nitrogen - Element information, properties and uses | Periodic Table
    Nitrogen gas makes up about 80% of the air we breathe It's by far the most abundant element in its group in the periodic table and yet it is the last member of its family to be discovered
  • Nitrogen Facts, Symbol, Discovery, Properties, Uses
    Nitrogen (pronounced as Nye-treh-gen) is a chemical element, existing in the form of a colorless diatomic gas Denoted by the chemical symbol N, it belongs to the family of nonmetals
  • What is Nitrogen? An In-Depth Guide to Nitrogen and Its Applications
    In this article, we will delve into nitrogen's properties, applications, and significance, answering common questions like what is nitrogen and exploring nitrogen facts and its formula
  • What is the Nitrogen Cycle and How Does It Sustain Life on Earth
    At its core, the nitrogen cycle consists of a series of processes that transform nitrogen in the atmosphere into forms that can be utilized by living organisms and then return it back to the atmosphere
  • Nitrogen | N2 | CID 947 - PubChem
    Nitrogen induced CNS depression ("rapture of the deep" or "the martini effect") results from a direct toxic effect of high nitrogen pressure on nerve conduction and produces effects similar to alcohol intoxication
  • Nitrogen - Thermophysical Properties - The Engineering ToolBox
    Refrigerated (cryogenic) nitrogen, is a colorless odorless liquid Gaseous nitrogen is used in food processing, in purging air conditioning and refrigeration systems, and in pressurizing aircraft tires Liquid nitrogen is used to freeze foods, to preserve whole blood and other biologicals, and as a coolant
  • Nitrogen Facts - Element Number 7 or N
    Nitrogen is a nonmetallic element that belongs to group 15 (the pnictogens) of the periodic table Under standard conditions, nitrogen exists as a diatomic molecule (N₂), where two nitrogen atoms are triple-bonde d together





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