Define nitrogen.
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Nitrogen is a chemical element with symbol N and atomic number 7. Elemental nitrogen is a colorless, odorless, tasteless, and mostly inert diatomic gas at standard conditions, constituting 78.09% by volume of Earth's atmosphere.
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Nitrogen is a part of the mixture of gases. It is colourless and odorless. It takes up about 78% of the Earth's atmosphere. It contains different proteins and is an essential gas for the process of nitrogen fixation.
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