Template:Infobox nitrogen

Nitrogen
7N
- ↑ N ↓ P Periodic table carbon ← nitrogen → oxygen
Appearance
colorless gas, liquid or solid Liquid nitrogen Spectral lines of nitrogen
General properties
Name, symbol, number	nitrogen, N, 7
Pronunciation	/ˈnaɪtrədʒən/ NY-trə-jən
Element category	nonmetal
Group, period, block	15 (pnictogens), 2, p
Standard atomic weight	14.007(1)
Electron configuration	[He] 2s2 2p3 2, 5
History
Discovery	Daniel Rutherford (1772)
Named by	Jean-Antoine Chaptal (1790)
Physical properties
Phase	gas
Density	(0 °C, 101.325 kPa) 1.251 g/L
Liquid density at b.p.	0.808 g·cm−3
Melting point	63.15 K, −210.00 °C, −346.00 °F
Boiling point	77.36 K, −195.79 °C, −320.33 °F
Triple point	63.1526 K (-210°C), 12.53 kPa
Critical point	126.19 K, 3.3978 MPa
Heat of fusion	(N2) 0.72 kJ·mol−1
Heat of vaporization	(N2) 5.56 kJ·mol−1
Molar heat capacity	(N2) 29.124 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 37 41 46 53 62 77
Atomic properties
Oxidation states	5, 4, 3, 2, 1, −1, −2, −3 (strongly acidic oxide)
Electronegativity	3.04 (Pauling scale)
Ionization energies (more)	1st: 1402.3 kJ·mol−1
	2nd: 2856 kJ·mol−1
	3rd: 4578.1 kJ·mol−1
Covalent radius	71±1 pm
Van der Waals radius	155 pm
Miscellanea
Crystal structure	hexagonal
Magnetic ordering	diamagnetic
Thermal conductivity	25.83 × 10−3 W·m−1·K−1
Speed of sound	(gas, 27 °C) 353 m·s−1
CAS registry number	7727-37-9
Most stable isotopes
Main article: Isotopes of nitrogen
iso NA half-life DM DE (MeV) DP 13N syn 9.965 min ε 2.220 13C 14N 99.634% 14N is stable with 7 neutrons 15N 0.366% 15N is stable with 8 neutrons

References

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