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Nitrogen  

Type

  • Topical Descriptor

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Scope note

  • An element with the atomic symbol N, atomic number 7, and atomic weight [14.00643; 14.00728]. Nitrogen exists as a diatomic gas and makes up about 78% of the earth's atmosphere by volume. It is a constituent of proteins and nucleic acids and found in all living cells.

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URI

http://www.yso.fi/onto/mesh/D009584

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