- Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.nitrogen (N), nonmetallic element of Group 15 [Va] of the periodic table. It is a colourless, odourless, tasteless gas that is the most plentiful element in Earth ’s atmosphere and is a constituent of all living matter.www.britannica.com/science/nitrogennitrogen, Gaseous chemical element, chemical symbol N, atomic number 7. A colourless, odourless, tasteless gas, it makes up 78% of Earth’s atmosphere and is a constituent of all living matter. As the nearly unreactive diatomic molecule N 2, it is useful as an inert atmosphere or to dilute other gases.www.britannica.com/summary/nitrogen
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