Home 7 N Nitrogen back to the periodic table

Atomic number   7
Symbol   N
Atomic weight   14.00674
Density [g/l]   1.17
Melting point [°C]   -210.0
Boiling point [°C]   -195.8
1st Ionization energy [eV]   14.534
Electronic configuration   [He] 2s2 2p3
Oxidation number (most stable)   5, 4, 3, 2, 3-
Atomic radius [pm]   71
Ionic radius [pm]   16 (3+)
Abundance in crustal rocks [ppm]   19
Origin of the name   (lat./greek) nitrogenium = nitre forming
Discovery   1772 by the German-Swedish chemist Carl Scheele and independently by the Scot botanist Daniel Rutherford
Uses   as a protective gas (e. g. for welding) and for the synthesis of nitrogen compounds (mainly fertilizers).

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© 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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