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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
    Because of the volatility of nitrogen compounds, nitrogen is relatively rare in the solid parts of the Earth It was first discovered and isolated by Scottish physician Daniel Rutherford in 1772 and independently by Carl Wilhelm Scheele and Henry Cavendish at about the same time
  • 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
  • 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 | N (Element) - PubChem
    Nitrogen was discovered by the Scottish physician Daniel Rutherford in 1772 It is the fifth most abundant element in the universe and makes up about 78% of the earth's atmosphere, which contains an estimated 4,000 trillion tons of the gas
  • Nitrogen Element Facts - chemicool. com
    Nitrogen is a colorless, odorless, tasteless, diatomic and generally inert gas at standard temperature and pressure At atmospheric pressure, nitrogen is liquid between 63 K and 77 K
  • 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
  • Nitrogen Element- Definition, Occurrence, Properties, Uses, Effects
    It is a nonmetallic element that accounts for approximately 78 percent of the Earth’s atmosphere It exists in the form of diatomic molecules, N 2 The gas is inert due to a triple bond between the two nitrogen atoms
  • Nitrogen Facts - Element Number 7 or N
    Nitrogen is colorless, odorless, and tasteless in its gaseous form As a liquid (achieved under cryogenic conditions), nitrogen is also colorless and resembles water in appearance, but it is much colder Nitrogen has low electrical conductivity and is slightly less dense than air
  • Nitrogen | History, Uses, Facts, Physical Chemical Characteristics
    Nitrogen is a chemical element with symbol N and atomic number 7 It was first discovered and isolated by Scottish physician Daniel Rutherford in 1772
  • What is Nitrogen? (with pictures) - AllTheScience
    Nitrogen is an odorless, tasteless, colorless nonmetallic chemical element which appears in great abundance in the Earth's atmosphere It also appears in a number of other compounds, and is a vital component of life on Earth for many organisms





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