Nitrogen is a inert diatomic gas at standard conditions. Many industrially important compounds, such as ammonia, nitric acid, organic nitrates, and cyanides, contain nitrogen. It occurs in all living organisms, and the nitrogen cycle describes movement of the element from air into the biosphere and organic compounds, then back into the atmosphere. It is a constituent element of amino acids and thus of proteins and nucleic acids. It resides in the chemical structure of almost all neurotransmitters, and is a defining component of alkaloids, biological molecules produced by many organisms.

Chemical Properties.

Appearance Colorless gas
Atomic Number 7
Atomic Weight 14.0067 g/mol
Block p
Boiling Point -196 °C
CAS Number 7727-37-9
Class 2.2
Crystal Structure Hexagonal
Density 1.25 g/cm3
EINECS Number 231-783-9
Electron Configuration 1s2s2p3
Group 15
Ionization Energy 1402.3 kJ/mol
Melting Point -210 °C
Oxidation State 5,4,3,2,1,-1,-2,-3
Period 2
RTECS Number QW9700000
Symbol N


Nitrogen producers/ suppliers –

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