what is nitrogen?
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Step-by-step explanation:
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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Step-by-step explanation:
Nitrogen is the chemical element with the symbol N and atomic number 7. It was first discovered and isolated by Scottish physician Daniel Rutherford in 1772.
Symbol: N
Atomic mass: 14.0067 u
Atomic number: 7
Electron configuration: [He] 2s22p3
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