Stickstoff

7
N
Gruppe
15
Periode
2
Block
p
Protonen
Elektronen
Neutronen
7
7
7
Generelle Eigenschaften
Ordnungszahl
7
Atommasse
14,0067
Massenzahl
14
Kategorie
Nichtmetalle
Farbe
Farblos
Radioaktiv
Nein
From the Latin word nitrum, Greek Nitron, native soda; and genes, forming
Kristallstruktur
Einfach hexagonal
Geschichte
Nitrogen is considered to have been discovered by Scottish physician Daniel Rutherford in 1772, who called it noxious air or fixed air.

It was also studied at about the same time by Carl Wilhelm Scheele, Henry Cavendish and Joseph Priestley.

In 1790 the French chemist Jean-Antoine-Claude Chaptal named the element nitrogen.
Elektronen pro Schale
2, 5
Elektronenkonfiguration
[He] 2s2 2p3
N
Nitrogen is present in all living organisms, in proteins, nucleic acids and other molecules
Physikalische Eigenschaften
Aggregatzustand
Gasförmig
Dichte
0,0012506 g/cm3
Schmelzpunkt
63,15 K | -210 °C | -346 °F
Siedepunkt
77,36 K | -195,79 °C | -320,42 °F
Schmelzwärme
0,36 kJ/mol
Verdampfungswärme
2,79 kJ/mol
Spezifische Wärmekapazität
1,04 J/g·K
Häufigkeit in der Erdkruste
0,002%
Häufigkeit im Universum
0,1%
Vial
Danksagungen für Bilder: Images-of-elements
Vial of glowing ultrapure nitrogen
CAS-Nummer
7727-37-9
PubChem CID Number
947
Atomeigenschaften
Atomradius
56 pm
Kovalenter Radius
71 pm
Elektronegativität
3,04 (Pauling-Skala)
Ionisierungsenergie
14,5341 eV
Molares Volumen
17,3 cm3/mol
Wärmeleitfähigkeit
0,0002598 W/cm·K
Oxidationszustände
-3, -2, -1, 1, 2, 3, 4, 5
Anwendung
Nitrogen is used to produce ammonia and fertilizers, vital for current food production methods.

Liquid nitrogen is used as a refrigerant.

Nitric acid is used as an oxidizing agent in liquid fueled rockets.

Nitrogen is a constituent of molecules in every major drug class in pharmacology and medicine.
Rapid release of nitrogen gas into an enclosed space can displace oxygen, and therefore represents an asphyxiation hazard
Isotope
Stabile Isotope
14N, 15N
Instabile Isotope
10N, 11N, 12N, 13N, 16N, 17N, 18N, 19N, 20N, 21N, 22N, 23N, 24N, 25N