- EnvironmentalChemistry.com: Astatine
 - Features an overview, name in other languages, atomic structure, chemical properties, physical properties, and regulatory information. - WebElements: Astatine
- Includes essential information, background, uses, compounds, electronic properties, and much more.
- Wikipedia: Astatine
- Hyperlinked overview of the element featuring notable characteristics, history, occurrence, isotopes, and more.
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