Nitrogen is the chemical element with the symbol N and atomic number 7.
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Nitrogen is the chemical element with the symbol N and atomic number 7.
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Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens.
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Nitrogen occurs in all organisms, primarily in amino acids, in the nucleic acids (DNA and RNA) and in the energy transfer molecule adenosine triphosphate.
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Nitrogen is a constituent of every major pharmacological drug class, including antibiotics.
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Nitrogen compounds have a very long history, ammonium chloride having been known to Herodotus.
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Nitrogen was studied at about the same time by Carl Wilhelm Scheele, Henry Cavendish, and Joseph Priestley, who referred to it as burnt air or phlogisticated air.
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Nitrogen has two stable isotopes: N and N The first is much more common, making up 99.
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Nitrogen trifluoride is a colourless and odourless gas that is thermodynamically stable, and most readily produced by the electrolysis of molten ammonium fluoride dissolved in anhydrous hydrogen fluoride.
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Nitrogen trichloride is a dense, volatile, and explosive liquid whose physical properties are similar to those of carbon tetrachloride, although one difference is that NCl3 is easily hydrolysed by water while CCl4 is not.
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Nitrogen triiodide is still more unstable and was only prepared in 1990.
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Nitrogen is one of the most important elements in organic chemistry.
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Nitrogen is the most common pure element in the earth, making up 78.
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Nitrogen gas is an industrial gas produced by the fractional distillation of liquid air, or by mechanical means using gaseous air.
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Nitrogen is commonly used during sample preparation in chemical analysis.
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Nitrogen can be used as a replacement, or in combination with, carbon dioxide to pressurise kegs of some beers, particularly stouts and British ales, due to the smaller bubbles it produces, which makes the dispensed beer smoother and headier.
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Nitrogen tanks are replacing carbon dioxide as the main power source for paintball guns.
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Nitrogen must be kept at higher pressure than CO2, making N2 tanks heavier and more expensive.
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Nitrogen gas, formed from the decomposition of sodium azide, is used for the inflation of airbags.
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