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  • Elements

    131.293 (6) g

    Name: xenonGroup number: 18
    Symbol: XeGroup name: Noble gas
    Atomic number: 54Period number: 5
    Atomic weight: 131.293 (6) gBlock: p-block
    CAS Registry ID: 7440-63-3Voice:
    Standard state: gas at 298 KColour: colourless
    Classification: Non-metallicAvailability:

    Image adapted with permission from Prof James Marshall"s (U. North Texas, USA) Walking Tour of the elements CD.

    Xenon is a "noble" or "inert" gas present in the atmosphere to a small extent. Xenon is present in the Martian atmosphere to the extent of about 0.08 ppm. Before 1962, it was generally assumed that xenon and other noble gases were unable to form compounds. Among the compounds of xenon now reported are xenon hydrate, sodium perxenate, xenon deuterate, difluoride, tetrafluoride, hexafluoride, and XePtF6 and XeRhF6. The highly explosive xenon trioxide, XeO3, is known.

    Metallic xenon is produced by applying several hundred kilobars of pressure. Xenon in a vacuum tube produces a blue glow when excited by an electrical discharge and finds use in strobe lamps. It is an odourless, colourless, inert gas.


    Here is a brief summary of the isolation of xenon.

    Xenon is present to a small extent in the atmosphere (less than 1 ppm by volume) and is obtained as a byproduct from the liquefaction and separation of air. This would not normally be carried out in the laboratory and xenon is available commercially in cylinders at high pressure.

  • XeF2
  • XeF4
  • XeF6
  • Chlorides
    none listed
    none listed
    none listed
    none listed
  • XeO3
  • XeO4
  • Sulfides
    none listed
    none listed
    none listed
    none listed

    Our data and resources are taken from Web Elements