heavy nitrogen

heavy nitrogen
the stable isotope of nitrogen having a mass number of 15.

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Universalium. 2010.

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  • nitrogen — 1. A gaseous element, atomic no. 7, atomic wt. 14.00674; N2 forms about 78.084% by volume of the dry atmosphere. 2. The molecular form of n., N2. 3. Pharmaceutical grade N2, containing not less than 99.0% by volume of N2; used as a …   Medical dictionary

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