Nitrogen - Periodic Table of the Elements

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PERIODIC TABLE OF THE ELEMENTS version 1.7


 N

English:  Nitrogen
French: Azote
Croatian: Dušik
German: Stickstoff
Italian: Azoto


Atomic number: 7
Group numbers: 15
Period: 2
Standard state (20 °C): gas

Nitrogen was discovered by Daniel Rutherford (Scotland) in 1772. The origin of the name comes from the Greek words nitron genes meaning nitre and forming and the Latin word nitrum (nitre is a common name for potassium nitrate, KNO3). It is colourless, odourless, generally inert gas. Minimally reactive at room temperature. A component of many organic and inorganic compounds. Makes up about 78% of earth's atmosphere.

Electronic configuration: [He] 2s² 2p³
Relative atomic mass: 14.0067(2)
Formal oxidation number: -3 -2 -1 +1 +2 +3 +4 +5

Electronegativities: 3.04
Thermal conductivity: 0.0258 W/(m K)
Electrical resistivity (20 °C): - μΩcm

Atomic radius: 54.9 pm
Density (g/dm3): 1026 (21 K) 
880 (m.p.) 
1.2506 (gas, 273 K)
Molar volume (cm3/mol): 13.65 (21 K) 
15.92 (m.p.) 
22399.97 (gas, 273 K)

Melting point: -210.00 °C
Boiling point: -195.8 °C
Critical temperature: -146.96 °C

Heat of fusion: 0.72 kJ/mol
Heat of vaporization: 5.577 kJ/mol
Heat of atomization: 470.842 kJ/mol

Nitrogen is obtained from liquid air by fractional distillation. Primarily to produce ammonia and other fertilizers. Also used in making nitric acid, which is used in explosives. Also used in welding and enhanced oil recovery. The price of 99.999 % pure nitrogen gas costs 177.10 €/dm3 in small quantities (1 dm3) and about 2.05 €/dm3 in large quantities (300 dm3). 6C <= 7N => 8O ___________________ If you have comments, corrections or suggestions about this site, please send me a e-mail. Periodic Table of the Elements __________________________________ Last modified: 29.03.2003 Copyright © 1998-2003 by Eni Generalic