Nitrogen

7
N
Gruppe
15
Periode
2
Blok
p
Protons
Electrons
Neutrons
7
7
7
General Properties
Atomnummer
7
Atommasse
14,0067
Mass Number
14
Kategori
Andre ikke-metaller
Farve
Colorless
Radioactive
Nej
From the Latin word nitrum, Greek Nitron, native soda; and genes, forming
Krystalstruktur
Simpel Hexagonal
History
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.
Elektroner i hver skal
2, 5
Elektronkonfiguration
[He] 2s2 2p3
N
Nitrogen is present in all living organisms, in proteins, nucleic acids and other molecules
Physical Properties
Tilstandsform
Gas
Massefylde
0,0012506 g/cm3
Smeltepunkt
63,15 K | -210 °C | -346 °F
Kogepunkt
77,36 K | -195,79 °C | -320,42 °F
Smeltevarme
0,36 kJ/mol
Fordampningsvarme
2,79 kJ/mol
Varmefylde
1,04 J/g·K
Abundance in Earth's crust
0,002%
Abundance in Universe
0,1%
Vial
Billede akkrediteringer: Images-of-elements
Vial of glowing ultrapure nitrogen
CAS Number
7727-37-9
PubChem CID Number
947
Atomic Properties
Atomradius
56 pm
Kovalent radius
71 pm
Elektronegativitet
3,04 (Paulings skala)
Ionization Potential
14,5341 eV
Atomic Volume
17,3 cm3/mol
Varmeledningsevne
0,0002598 W/cm·K
Oxidationstrin
-3, -2, -1, 1, 2, 3, 4, 5
Applications
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
Isotoper
Stable Isotopes
14N, 15N
Unstable Isotopes
10N, 11N, 12N, 13N, 16N, 17N, 18N, 19N, 20N, 21N, 22N, 23N, 24N, 25N