Ang nitroheno o nitrogeno (Iningles nitrogen ) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga N ug kaiphan nga atomik 7. Ang nitroheno mao ang wala puthaw .
Quick facts Nitrogen, Panagway ...
Nitrogen
7
Panagway
colorless gas, liquid or solidLiquid nitrogen Spectral lines of nitrogen
Kinatibuk-ang mga kinaiya
Ngalan, simbolo , kaiphan
nitrogen, N, 7
Paglitok
[[Help:Pronunciation respelling key|Plantilya:Smallcaps all
Kategoriyang elemento wala puthaw
Group , period , block 15 , 2 , p
Gibug-aton sa atomo 14.007(1)
Kontorno sa elektron [He] 2s2 2p3 Electron shells of nitrogen (2, 5)
History
Pagkadiskobre Daniel Rutherford (1772)
Named by
Jean-Antoine Chaptal (1790)
Physical properties
Phase gas
Density (0 °C, 101.325 kPa )
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 )−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, -3acidic 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
13 Nsyn 9.965 min
ε 2.220
13 C
14 N99.634%
14 N is stable with 7 neutrons
15 N0.366%
15 N is stable with 8 neutrons
· r
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