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Science: Chemistry: Elements: Halogens (3)

http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/85.html

» ChemGlobe: Astatine - Electronic, thermal, and steric data, along with a table of isotopes.

http://www.chemicalelements.com/elements/at.html

» Chemical Elements.com: Astatine - Basic information, atomic structure, and table of isotopes.

http://environmentalchemistry.com/yogi/periodic/At.html

» EnvironmentalChemistry.com: Astatine - Atomic structure, chemical and physical properties, and table of nuclides.

http://education.jlab.org/itselemental/ele085.html

» It's Elemental: Astatine - Basic physical and historical information.

http://periodic.lanl.gov/elements/85.html

» LANL: Astatine - History, uses, production, and properties.

http://www.lenntech.com/Periodic-chart-elements/At-en.htm

» Lenntech: Astatine - Physical data, chemical properties, and health effects.

http://www.chemsoc.org/viselements/pages/astatine.html

» Visual Elements: Astatine - General and physical information, source, key isotopes, and ionisation energies.

http://www.webelements.com/webelements/elements/text/At/key.html

» WebElements: Astatine - Extensive information on history and properties.

» Wikipedia: Astatine - Properties of the element, including its history, applications, and characteristics.

» Radiochemistry of Astatine - Full text of the monograph by Evan H. Appelman (Argonne National Laboratory, Lemont, Illinois). [PDF] (March, 1960)

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