Template:Infobox xenon/sandbox

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[[Category:Template:Pagetype with short description]]

Xenon, 54Xe
Xenon discharge tube.jpg
A xenon-filled discharge tube glowing light blue
Xenon
Pronunciation
Appearancecolorless gas, exhibiting a blue glow when placed in a high voltage electric field
Standard atomic weight Ar, std(Xe)Template:Val[3]
Xenon in the periodic table
Template:Periodic table (32 columns, micro) Kr

Xe

Rn
iodinexenoncaesium
Atomic number (Z)54
Groupgroup 18 (noble gases)
Periodperiod 5
Block  p-block
Electron configuration[Kr] 4d10 5s2 5p6
Electrons per shell2, 8, 18, 18, 8
Physical properties
Phase at STPgas
Melting point161.40 K ​(−111.75 °C, ​−169.15 °F)
Boiling point165.051 K ​(−108.099 °C, ​−162.578 °F)
Density (at STP)5.894 g/L
when liquid (at b.p.)2.942 g/cm3[4]
Triple point161.405 K, ​81.77 kPa[5]
Critical point289.733 K, 5.842 MPa[5]
Heat of fusion2.27 kJ/mol
Heat of vaporization12.64 kJ/mol
Molar heat capacity5R/2 = 20.786 J/(mol·K)
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 83 92 103 117 137 165
Atomic properties
Oxidation states0, +1, +2, +4, +6, +8 (rarely more than 0; a weakly acidic oxide)
ElectronegativityPauling scale: 2.6
Ionization energies
  • 1st: 1170.4 kJ/mol
  • 2nd: 2046.4 kJ/mol
  • 3rd: 3099.4 kJ/mol
Covalent radius140±9 pm
Van der Waals radius216 pm
Color lines in a spectral range
Spectral lines of xenon
Other properties
Natural occurrenceprimordial
Crystal structureface-centered cubic (fcc)
Face-centered cubic crystal structure for xenon
Speed of soundliquid: 1090 m/s
gas: 169 m·s−1
Thermal conductivity5.65×10−3 W/(m·K)
Magnetic orderingdiamagnetic[6]
CAS Number7440-63-3
History
Discovery and first isolationWilliam Ramsay and Morris Travers (1898)
Main isotopes of xenon
[[Isotope|IsoTemplate:Shytope]] [[Natural abundance|AbunTemplate:Shydance]] Half-life (t1/2) Decay mode [[Decay product|ProTemplate:Shyduct]]
124Xe 0.095% >4.8×1016 y (β+β+) 124Te
125Xe syn 16.9 h ε 125I
126Xe 0.089% - (β+β+) 126Te
127Xe syn 36.345 d ε 127I
128Xe 1.91% - (SF)
129Xe 26.4% - (SF)
130Xe 4.07% - (SF)
131Xe 21.2% - (SF)
132Xe 26.9% - (SF)
133Xe syn 5.247 d β 133Cs
134Xe 10.4% >1.1×1016 y (ββ) 134Ba
135Xe syn 9.14 h β 135Cs
136Xe 8.86% 2.11×1021 y[7] ββ 136Ba
Decay modes in parentheses are predicted, but have not yet been observed
Category Category: Xenon
| references

References

  1. Simpson, J. A.; Weiner, E. S. C., eds. (1989). "Xenon". Oxford English Dictionary. 20 (2nd ed.). Clarendon Press. ISBN 0-19-861232-X.
  2. "Xenon". Dictionary.com Unabridged. 2010. Retrieved 2010-05-06.
  3. Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
  4. "Xenon". Gas Encyclopedia. Air Liquide. 2009.
  5. 5.0 5.1 Template:RubberBible92nd
  6. Magnetic susceptibility of the elements and inorganic compounds, in Template:RubberBible86th
  7. Ackerman, N.; et al. (2011). "Observation of Two-Neutrino Double-Beta Decay in 136Xe with the EXO-200 Detector". Physical Review Letters. 107 (21): 212501. arXiv:1108.4193. Bibcode:2011PhRvL.107u2501A. doi:10.1103/PhysRevLett.107.212501.
  8. Simpson, J. A.; Weiner, E. S. C., eds. (1989). "Xenon". Oxford English Dictionary. 20 (2nd ed.). Clarendon Press. ISBN 0-19-861232-X.
  9. "Xenon". Dictionary.com Unabridged. 2010. Retrieved 2010-05-06.

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