Template:Infobox nitrogen

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7 carbon ← nitrogen → oxygen - ↑ N ↓ P Periodic table - Extended periodic table
General
Name, symbol, number	nitrogen, N, 7
Chemical series	nonmetals
Group, period, block	15, 2, p
Appearance	colorless gas
Standard atomic weight	14.0067(2) g·mol−1
Electron configuration	1s2 2s2 2p3
Electrons per shell	2, 5
Physical properties
Phase	gas
Density	(0 °C, 101.325 kPa) 1.251 g/L
Melting point	63.15 K (-210.00 °C, -346.00 °F)
Boiling point	77.36 K (-195.79 °C, -320.42 °F)
Critical point	126.21 K, 3.39 MPa
Heat of fusion	(N2) 0.720 kJ·mol−1
Heat of vaporization	(N2) 5.57 kJ·mol−1
Heat capacity	(25 °C) (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
Crystal structure	hexagonal
Oxidation states	±3, 5, 4, 2 (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
Atomic radius	65 pm
Atomic radius (calc.)	56 pm
Covalent radius	75 pm
Van der Waals radius	155 pm
Miscellaneous
Magnetic ordering	diamagnetic
Thermal conductivity	(300 K) 25.83 m W·m−1·K−1
Speed of sound	(gas, 27 °C) 353 m/s
CAS registry number	7727-37-9
Selected 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% N is stable with 7 neutrons 15N 0.366% N is stable with 8 neutrons
References
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