Xenon
Links
EnvironmentalChemistry.com: Xenon
http://environmentalchemistry.com/yogi/periodic/Xe.html
Atomic structure, properties, and table of nuclides.
It's Elemental: Xenon
http://education.jlab.org/itselemental/ele054.html
Basic physical and historical information.
ChemicalElements.com: Xenon
http://www.chemicalelements.com/elements/xe.html
Basic information, atomic structure, and table of isotopes.
Especil Gas Inc.: Xenon
http://www.c-f-c.com/specgas_products/xenon.htm
Numeric data, uses, and general information.
Visual Elements: Xenon
http://www.chemsoc.org/viselements/pages/xenon.html
General and physical information, source, uses, key isotopes, and ionisation energies.
WebElements: Xenon
http://www.webelements.com/webelements/elements/text/Xe/key.html
Extensive information on history, uses, occurrence, compounds, and properties.
Wikipedia: Xenon
http://www.wikipedia.org/wiki/Xenon
Properties of the element, including its history, applications, and charateristics.
Lenntech: Xenon
http://www.lenntech.com/Periodic-chart-elements/Xe-en.htm
Physical data, chemical properties, health and environmental effects.