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Xenon tube light


Xenon, a noble gas element of atomic number 54, was discovered and named by William Ramsay in 1898. Under standard conditions, xenon is a heavy, colorless, odorless gas that is chemically unreactive. It is the least abundant noble gas composing 0.00087% of the atmosphere, although it occurs more frequently in gases evolved from thermal springs. The principal application for the gas is in electronic devices and lamps.

Uses: filing luminescent tubes, flash lamps for photography, lasers, anesthesia, and hermetically sealed storage cases.

Synonyms and Related Terms

Xe; xénon (Fr.); xeno (It.); Xênon (Port.); xenón (Esp.)


  • Noncombustible

Physical and Chemical Properties

Composition Xe (atomic no. 54)
CAS 7440-63-3
Melting Point -112 C
Density 3.05 g/ml
Molecular Weight atomic wt 131.293
Boiling Point -107.1 C

Resources and Citations

  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 652
  • G.G. Hawley, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 6th ed., 1961
  • Encyclopedia of Chemical Technology, R.E.Kirk, D.F.Othmer (eds.), John Wiley & Sons, Inc., New York, 1984

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