Name Xenon
Symbol Xe
Atomic Number 54
Atomic Mass 131.29 atomic mass units
Number of Protons 54
Number of Neutrons 77
Number of Electrons 54
Melting Point -111.79 C
Boiling Point -108.12 C
Density .005887 grams per cubic centimeter
Normal Phase Gas
Family Noble Gases
Period 5
Cost $120 per 100 grams



Origin of Name From the Greek word, xenon, meaning stranger
Date and Place of Discovery On July 12, 1898 in England
Discovered by Sir William Ramsay and Morris Travers
Common Compounds
Interesting facts
  • It produces a blue glow in a vacuum tube when excited by an electrical discharge (used in strobe lights).
  • It is a byproduct formed when liquefying air.
  • It is not normally kept in a laboratory.
  • It occurs in the earth's atmosphere in very small amounts.
  • It was part of the first noble gas compound that was synthesized.
Common Uses
  • Lighting of all types, including strobe lights
  • Flash cameras
  • Movie projection
  • Nuclear reactors
  • Oxidizing agents


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Chemical Elements
Corrosion Source
Jefferson Labs
Mrs. Purdy's Web Page
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