Britannica Nobel Prize: Xenon: Detailed overview and data.
ChemGlobe: Xenon: Electronic, thermal, and steric data along with an isotope table.
ChemicalElements.com: Xenon: Basic information, atomic structure, and table of isotopes.
EnvironmentalChemistry.com: Xenon: Atomic structure, properties, and table of nuclides.
Especiál Gas Inc.: Xenon: Numeric data, uses, and general information.
It's Elemental: Xenon: Basic physical and historical information.
LANL: Xenon: Basic information, history, isotopes, and uses.
Lenntech: Xenon: Physical data, chemical properties, health and environmental effects.
Visual Elements: Xenon: General and physical information, source, uses, key isotopes, and ionisation energies.
WebElements: Xenon: Extensive information on history, uses, occurrence, compounds, and properties.
Wikipedia: Xenon: Properties of the element, including its history, applications, and characteristics.
Xenon: Data tables and historic information.