ChemGlobe: Xenon
- Electronic, thermal, and steric data along with an isotope table.
- http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/54.html

LANL: Xenon
- Basic information, history, isotopes, and uses.
- http://periodic.lanl.gov/elements/54.html

Wikipedia: Xenon
- Properties of the element, including its history, applications, and characteristics.
- http://en.wikipedia.org/wiki/Xenon

Lenntech: Xenon
- Physical data, chemical properties, health and environmental effects.
- http://www.lenntech.com/Periodic-chart-elements/Xe-en.htm

Visual Elements: Xenon
- General and physical information, source, uses, key isotopes, and ionisation energies.
- http://www.chemsoc.org/viselements/pages/xenon.html

Especiál Gas Inc.: Xenon
- Numeric data, uses, and general information.
- http://www.c-f-c.com/specgas_products/xenon.htm

ChemicalElements.com: Xenon
- Basic information, atomic structure, and table of isotopes.
- http://www.chemicalelements.com/elements/xe.html

It's Elemental: Xenon
- Basic physical and historical information.
- http://education.jlab.org/itselemental/ele054.html

EnvironmentalChemistry.com: Xenon
- Atomic structure, properties, and table of nuclides.
- http://environmentalchemistry.com/yogi/periodic/Xe.html

Britannica Nobel Prize: Xenon
- Detailed overview and data.
- http://www.britannica.com/nobel/micro/646_78.html