| Astatine: Data tables and historic information. |
| Britannica Nobel Prize: Astatine: Overview and basic data. |
| ChemGlobe: Astatine: Electronic, thermal, and steric data, along with a table of isotopes. |
| Chemical Elements.com: Astatine: Basic information, atomic structure, and table of isotopes. |
| EnvironmentalChemistry.com: Astatine: Atomic structure, chemical and physical properties, and table of nuclides. |
| It's Elemental: Astatine: Basic physical and historical information. |
| LANL: Astatine: History, uses, production, and properties. |
| Lenntech: Astatine: Physical data, chemical properties, and health effects. |
| Radiochemistry of Astatine: Full text of the monograph by Evan H. Appelman (Argonne National Laboratory, Lemont, Illinois). [PDF] |
| Visual Elements: Astatine: General and physical information, source, key isotopes, and ionisation energies. |
| WebElements: Astatine: Extensive information on history and properties. |
| Wikipedia: Astatine: Properties of the element, including its history, applications, and characteristics. |
Classical
