Nitrogen
7
N
Gruppe
15
Periode
2
Blokk
p
Protoner
Elektroner
Nøytroner
7
7
7
Generelle egenskaper
Atomnummer
7
Atomvekt
14,0067
Massetall
14
Kategori
Ikke-metaller
Farge
Fargeløs
Radioaktiv
Nei
From the Latin word nitrum, Greek Nitron, native soda; and genes, forming
Krystallstruktur
Simple Hexagonal
Historie
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.
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.
Elektroner per energinivå
2, 5
Elektronkonfigurasjon
[He] 2s2 2p3
Nitrogen is present in all living organisms, in proteins, nucleic acids and other molecules
Fysikalske egenskaper
Fase
Gass
Tetthet
0,0012506 g/cm3
Smeltepunkt
63,15 K | -210 °C | -346 °F
Kokepunkt
77,36 K | -195,79 °C | -320,42 °F
Smeltevarme
0,36 kJ/mol
Fordampningsvarme
2,79 kJ/mol
Spesifikk varmekapasitet
1,04 J/g·K
Forekomst i jordskorpa
0,002%
Forekomst i universet
0,1%
CAS Number
7727-37-9
PubChem CID Number
947
Atomegenskaper
Atomradius
56 pm
Kovalent radius
71 pm
Elektronegativitet
3,04 (Pauling-skalaen)
Ioniseringsenergi
14,5341 eV
Molart volum
17,3 cm3/mol
Termisk ledningsevne
0,0002598 W/cm·K
Oksidasjonstilstander
-3, -2, -1, 1, 2, 3, 4, 5
Bruksområder
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.
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
Isotoper
Stabile isotoper
14N, 15NUstabile isotoper
10N, 11N, 12N, 13N, 16N, 17N, 18N, 19N, 20N, 21N, 22N, 23N, 24N, 25N