Template:Infobox xenon

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54 iodine ← xenon → caesium Kr ↑ Xe ↓ Rn Periodic table - Extended periodic table
General
Name, symbol, number	xenon, Xe, 54
Chemical series	noble gases
Group, period, block	18, 5, p
Appearance	colorless gas
Standard atomic weight	131.293(6) g·mol−1
Electron configuration	[Kr] 4d10 5s2 5p6
Electrons per shell	2, 8, 18, 18, 8
Physical properties
Phase	gas
Density	(0 °C, 101.325 kPa) 5.894 g/L
Melting point	(101.325 kPa) 161.4 K (−111.7 °C, −169.1 °F)
Boiling point	(101.325 kPa) 165.03 K (−108.12 °C, −162.62 °F)
Triple point	161.405 K (-112°C), 81.6[1] kPa
Critical point	289.77 K, 5.841 MPa
Heat of fusion	(101.325 kPa) 2.27 kJ·mol−1
Heat of vaporization	(101.325 kPa) 12.64 kJ·mol−1
Specific heat capacity	(100 kPa, 25 °C) 20.786 J·mol−1·K−1
Vapor pressure P/Pa 1 10 100 1 k 10 k 100 k at T/K 83 92 103 117 137 165
Atomic properties
Crystal structure	cubic face centered
Oxidation states	0, +1, +2, +4, +6, +8 (rarely more than 0) (weakly acidic oxide)
Electronegativity	2.6 (Pauling scale)
Ionization energies	1st: 1170.4 kJ·mol−1
	2nd: 2046.4 kJ·mol−1
	3rd: 3099.4 kJ·mol−1
Atomic radius (calc.)	108 pm
Covalent radius	130 pm
Van der Waals radius	216 pm
Miscellaneous
Magnetic ordering	nonmagnetic
Thermal conductivity	(300 K) 5.65x10-3  W·m−1·K−1
Speed of sound	(liquid) 1090 m/s
CAS registry number	7440-63-3
Selected isotopes
Main article: Isotopes of xenon iso NA half-life DM DE (MeV) DP 124Xe 0.095% 124Xe is stable with 70 neutrons 125Xe syn 16.9 h ε 1.652 125I 126Xe 0.089% 126Xe is stable with 72 neutrons 127Xe syn 36.345 d ε 0.662 127I 128Xe 1.91% 128Xe is stable with 74 neutrons 129Xe 26.4% 129Xe is stable with 75 neutrons 130Xe 4.07% 130Xe is stable with 76 neutrons 131Xe 21.2% 131Xe is stable with 77 neutrons 132Xe 26.9% 132Xe is stable with 78 neutrons 133Xe syn 5.247 d β− 0.427 133Cs 134Xe 10.4% 134Xe is stable with 80 neutrons 135Xe syn 9.14 h β− 1.16 135Cs 136Xe 8.86% 136Xe is stable with 82 neutrons
References
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