what is nitrogen? please tell
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the chemical element of atomic number 7, a colourless, odourless unreactive gas that forms about 78 per cent of the earth's atmosphere. Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (−195.8°C) and is used as a coolant.
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a gas that has no colour, taste or smell. Nitrogen forms about 80% of the air around the earth
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