Kväve

7
N
Grupp
15
Period
2
Block
p
Protoner
Electrons
Neutroner
7
7
7
Generella Egenskaper
Atomnummer
7
Atommassa
14,0067
Mass Number
14
Kategori
Icke-metaller
Färg
Färglös
Radioaktiv
Nej
From the Latin word nitrum, Greek Nitron, native soda; and genes, forming
Kristallstruktur
Enkelt hexagonalt
Historia
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 per skal
2, 5
Elektronkonfiguration
[He] 2s2 2p3
N
Nitrogen is present in all living organisms, in proteins, nucleic acids and other molecules
Fysikaliska Egenskaper
Aggregationstillstånd
Gasformig
Densitet
0,0012506 g/cm3
Smältpunkt
63,15 K | -210 °C | -346 °F
Kokpunkt
77,36 K | -195,79 °C | -320,42 °F
Smältvärme
0,36 kJ/mol
Ångbildningsvärme
2,79 kJ/mol
Specifik värmekapacitet
1,04 J/g·K
Abundance in Earth's crust
0,002%
Abundance in Universe
0,1%
Vial
Bildkrediter: Images-of-elements
Vial of glowing ultrapure nitrogen
CAS Number
7727-37-9
PubChem CID Number
947
Atomära Egenskaper
Atomradie
56 pm
Kovalent radie
71 pm
Elektronegativitet
3,04 (Paulingskalan)
Jonisationspotential
14,5341 eV
Molvolym
17,3 cm3/mol
Värmeledningsförmåga
0,0002598 W/cm·K
Oxidationstillstånd
-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
Stabila isotoper
14N, 15N
Instabila isotoper
10N, 11N, 12N, 13N, 16N, 17N, 18N, 19N, 20N, 21N, 22N, 23N, 24N, 25N