| Britannica Nobel Prize: Krypton: Overview and basic data. |
| ChemGlobe: Krypton: Electronic, thermal, and steric data along with an isotope table. |
| Chemical Elements.com: Krypton: Basic information, atomic structure, and table of isotopes. |
| EnvironmentalChemistry.com: Krypton: Atomic structure, properties, and table of nuclides. |
| Especiál Gas Inc.: Krypton: Numeric data, uses, and general information. |
| It's Elemental: Krypton: Basic physical and historical information. |
| Krypton: Data tables and historic information. |
| LANL: Krypton: History, sources, isotopes, and uses. |
| Lenntech: Krypton: Physical data, chemical properties, health and environmental effects. |
| Visual Elements: Krypton: General and physical information, uses, key isotopes, and ionisation energies. |
| WebElements: Krypton: Extensive information on history, uses, occurrence, compounds, and properties of the element. |
| What Does the Element Krypton Look Like?: Explanation with photographs. |
| Wikipedia: Krypton: Properties of the element, including its history, applications, and characteristics. |
Classical
