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Xenon,  54Xe
Xenon discharge tube.jpg
Xenon Spectrum.jpg
Spectral lines o xenon
General properties
Name, seembol xenon, Xe
Appearance colourless gas, exhibitin a blue glow when placed in a heich voltage electric field
Pronunciation /ˈzɛnɒn/ ZEN-on[1]
or /ˈznɒn/ ZEE-non[2]
Xenon in the periodic cairt
Hydrogen (diatomic nonmetal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline yird metal)
Boron (metalloid)
Carbon (polyatomic nonmetal)
Nitrogen (diatomic nonmetal)
Oxygen (diatomic nonmetal)
Fluorine (diatomic nonmetal)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline yird metal)
Aluminium (post-transeetion metal)
Silicon (metalloid)
Phosphorus (polyatomic nonmetal)
Sulfur (polyatomic nonmetal)
Chlorine (diatomic nonmetal)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline yird metal)
Scandium (transeetion metal)
Titanium (transeetion metal)
Vanadium (transeetion metal)
Chromium (transeetion metal)
Manganese (transeetion metal)
Airn (transeetion metal)
Cobalt (transeetion metal)
Nickel (transeetion metal)
Capper (transeetion metal)
Zinc (transeetion metal)
Gallium (post-transeetion metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (polyatomic nonmetal)
Bromine (diatomic nonmetal)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline yird metal)
Yttrium (transeetion metal)
Zirconium (transeetion metal)
Niobium (transeetion metal)
Molybdenum (transeetion metal)
Technetium (transeetion metal)
Ruthenium (transeetion metal)
Rhodium (transeetion metal)
Palladium (transeetion metal)
Siller (transeetion metal)
Cadmium (transeetion metal)
Indium (post-transeetion metal)
Tin (post-transeetion metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (diatomic nonmetal)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline yird metal)
Lanthanum (lanthanide)
Cerium (lanthanide)
Praseodymium (lanthanide)
Neodymium (lanthanide)
Promethium (lanthanide)
Samarium (lanthanide)
Europium (lanthanide)
Gadolinium (lanthanide)
Terbium (lanthanide)
Dysprosium (lanthanide)
Holmium (lanthanide)
Erbium (lanthanide)
Thulium (lanthanide)
Ytterbium (lanthanide)
Lutetium (lanthanide)
Hafnium (transeetion metal)
Tantalum (transeetion metal)
Tungsten (transeetion metal)
Rhenium (transeetion metal)
Osmium (transeetion metal)
Iridium (transeetion metal)
Platinum (transeetion metal)
Gold (transeetion metal)
Mercur (transeetion metal)
Thallium (post-transeetion metal)
Leid (post-transeetion metal)
Bismuth (post-transeetion metal)
Polonium (post-transeetion metal)
Astatine (metalloid)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline yird metal)
Actinium (actinide)
Thorium (actinide)
Protactinium (actinide)
Uranium (actinide)
Neptunium (actinide)
Plutonium (actinide)
Americium (actinide)
Curium (actinide)
Berkelium (actinide)
Californium (actinide)
Einsteinium (actinide)
Fermium (actinide)
Mendelevium (actinide)
Nobelium (actinide)
Lawrencium (actinide)
Rutherfordium (transeetion metal)
Dubnium (transeetion metal)
Seaborgium (transeetion metal)
Bohrium (transeetion metal)
Hassium (transeetion metal)
Meitnerium (unkent chemical properties)
Darmstadtium (unkent chemical properties)
Roentgenium (unkent chemical properties)
Copernicium (transeetion metal)
Ununtrium (unkent chemical properties)
Flerovium (post-transeetion metal)
Ununpentium (unkent chemical properties)
Livermorium (unkent chemical properties)
Ununseptium (unkent chemical properties)
Ununoctium (unkent chemical properties)


Atomic nummer (Z) 54
Group, block group 18 (noble gases), p-block
Period period 5
Element category   noble gas
Staundart atomic wicht (Ar) 131.293(6)
Electron configuration [Kr] 5s2 4d10 5p6
per shell
2, 8, 18, 18, 8
Pheesical properties
Phase gas
Meltin pynt 161.40 K ​(-111.75 °C, ​-169.15 °F)
Bylin pynt 165.051 K ​(-108.099 °C, ​-162.578 °F)
Density at stp (0 °C and 101.325 kPa) 5.894 g/L
when liquid, at b.p. 3.057[3] g/cm3
Threeple pynt 161.405 K, ​81.77[4] kPa
Creetical pynt 289.733 K, 5.842[4] MPa
Heat o fusion 2.27 kJ/mol
Heat o vapourisation 12.64 kJ/mol
Molar heat capacity 5R/2 = 20.786 J/(mol·K)
vapour pressur
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 83 92 103 117 137 165
Atomic properties
Oxidation states 0, +1, +2, +4, +6, +8 ​rarely mair than 0)
(weakly acidic oxide
Electronegativity Pauling scale: 2.6
Covalent radius 140±9 pm
Van der Waals radius 216 pm
Creestal structur face-centred cubic (fcc)
Face-centered cubic crystal structur for xenon
Speed o soond (liquid) 1090 m/s; (gas) 169 m/s
Thermal conductivity 5.65×10-3  W/(m·K)
Magnetic orderin diamagnetic[5]
CAS Nummer 7440-63-3
Diskivery William Ramsay an Morris Travers (1898)
First isolation William Ramsay an Morris Travers (1898)
Maist stable isotopes o xenon
iso NA hauf-life DM DE (MeV) DP
124Xe 0.095% >4.8×1016 y (β+β+) 0.825 124Te
125Xe syn 16.9 h ε 1.652 125I
126Xe 0.089% - (β+β+) 0.8973 126Te
127Xe syn 36.345 d ε 0.662 127I
128Xe 1.91% - (SF) <35.047
129Xe 26.4% - (SF) <33.947
130Xe 4.07% - (SF) <32.483
131Xe 21.2% - (SF) <31.140
132Xe 26.9% - (SF) <30.885
133Xe syn 5.247 d β 0.427 133Cs
134Xe 10.4% >1.1×1016 y (ββ) 2.864 134Ba
135Xe syn 9.14 h β 1.16 135Cs
136Xe 8.86% 2.11×1021 y[6] ββ 2.45783[7] 136Ba
Decay modes in parentheses are predictit, but hae nae yet been observed
· references

Xenon is a chemical element wi the seembol Xe an atomic nummer 54. It is a colourless, hivy, odorless noble gas, that occurs in the Yird's atmosphere in trace amoonts.[8] Altho generally unreactive, xenon can unnergo a few chemical reactions sic as the furmation o xenon hexafluoroplatinate, the first noble gas compound tae be synthesized.[9][10][11]

References[eedit | eedit soorce]

  1. Simpson, J. A.; Weiner, E. S. C., eds. (1989). "Xenon". Oxford Inglis Dictionary. 20 (2nd ed.). Clarendon Press. ISBN 0-19-861232-X. 
  2. "Xenon". Dictionary.com Unabridged. 2010. Retrieved 2010-05-06. 
  3. "Krypton". Gas Encyclopedia. Air Liquide. 2009. 
  4. 4.0 4.1 Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nt ed.). CRC Press. p. 4.123. ISBN 1439855110. 
  5. Magnetic susceptibility of the elements and inorganic compounds, in Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5. 
  6. 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. Bibcode:2011PhRvL.107u2501A. arXiv:1108.4193. doi:10.1103/PhysRevLett.107.212501. 
  7. Redshaw, Matthew; Wingfield, Elizabeth; McDaniel, Joseph; Myers, Edmund (Februar 2007). "Mass and Double-Beta-Decay Q Value of Xe136". Physical Review Letters. 98 (5). doi:10.1103/PhysRevLett.98.053003. 
  8. Staff (2007). "Xenon". Columbia Electronic Encyclopedia (6th ed.). Columbia University Press. Retrieved 2007-10-23. 
  9. Husted, Robert; Boorman, Mollie (December 15, 2003). "Xenon". Los Alamos National Laboratory, Chemical Division. Retrieved 2007-09-26. 
  10. Rabinovich, Viktor Abramovich; Vasserman, A. A.; Nedostup, V. I.; Veksler, L. S. (1988). Thermophysical properties of neon, argon, krypton, and xenon (English-language ed.). Washington, DC: Hemisphere Publishing Corp. ISBN 0-89116-675-0. Retrieved 2009-04-02. —National Standard Reference Data Service of the USSR. Volume 10.
  11. Freemantel, Michael (August 25, 2003). "Chemistry at its Most Beautiful" (PDF). Chemical & Engineering News. Retrieved 2007-09-13.