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Nitrogen is one of the essentials to life and it makes up to 78% of the Earth's atmosphere. It s a non-metallic element that constitutes nearly four-fifths of the air by volume, occurring as a colorless, odorless, almost inert diatomic gas, N2, in various minerals and in all proteins and used in a wide variety of applications, including manufacture of ammonia, nitric acid, etc.Nitrogen is non flammable gas, more stable than air, although not completely inert. It can detect much smaller le …