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nitrogen    音標拼音: [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
  • 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
  • Nitrogen Gas Liquid Nitrogen - Find a Branch or Buy Online | Airgas
    Whether you need gas or liquid nitrogen, find the right supply mode for your needs Packaged gas We offer nitrogen in high-pressure gas cylinders and liquid nitrogen cylinders — available in a variety of sizes — to meet any small to medium volume needs
  • Nitrogen Cycle: Steps, Process, Significance, Human Influence
    The movement of nitrogen between the atmosphere, biosphere, and geosphere in different forms is called the nitrogen cycle and is one of the major biogeochemical cycles
  • NITROGEN Definition Meaning - Merriam-Webster
    The meaning of NITROGEN is a nonmetallic chemical element with atomic number 7 that under standard conditions is a colorless, odorless, inert gas, that constitutes 78 percent of the Earth's atmosphere, and that is used especially in the industrial synthesis of ammonia, as a component of inert atmospheres, and in liquid form as a refrigerant
  • 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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