Nitrogen

Nitrogen
N
In situ availability:	trace
Necessity:	essential
Atomic number:	7
Atomic mass:	14.00674
group:	15
period:	2
normal phase:	Gas
series:	Non-metals
density:	1.251 g/L
melting point:	63.15K, -210.00°C, -346.00°F
boiling point:	77.36K, -195.79°C, -320.42°F
N/A ← N/A → N/A
C ← N → O
Si ← P → S
Atomic radius (pm):	65
Bohr radius (pm):	56
Covalent radius (pm):	75
Van der Waals radius (pm):	155
ionic radius (pm):	(+3) 16
1st ion potential (eV):	14.53
Electron Configuration
1s2 2s2 2p3
Electrons Per Shell
2, 5
Electronegativity:	3.04
Electron Affinity:	Unstable anion
Oxidation states:	+/-3, 5, 4, 2
Magnetism:
Crystal structure:	Hexagonal

Nitrogen is a Non-metal in group 15. It has a Hexagonal crystalline structure. This element has two stable isotopes: 14 and 15.

"Nitrogen (N) is an essential element of life and a part of all plant and animal proteins. Nitrogen can be produced in several ways. Some plants, such as soybeans and other legumes, recover nitrogen directly from the atmosphere or from the soil in a process know as "fixation," whereby the plant converts nitrogen into carbohydrates, essential amino acids, and proteins. Nitrogen is commercially recovered from the air as ammonia, which is produced by combining nitrogen in the atmosphere with hydrogen from natural gas. Ammonia is converted to other nitrogen compounds, the most important of which are urea (NH₂CONH₂), nitric acid (HNO₃), ammonium nitrate (NH₄NO₃), and ammonium sulfate [(NH₄)₂SO₄]. With the exception of nitric acid, these compounds are widely used as fertilizer." - USGS Nitrogen Statistics and Information[1]

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