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WebElements: Astatine - http://www.webelements.com/webelements/elements/text/At/key.html
Extensive information on history and properties. |
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Wikipedia: Astatine - http://en.wikipedia.org/wiki/Astatine
Properties of the element, including its history, applications, and characteristics. |
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LANL: Astatine - http://periodic.lanl.gov/elements/85.html
History, uses, production, and properties. |
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It's Elemental: Astatine - http://education.jlab.org/itselemental/ele085.html
Basic physical and historical information. |
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Chemical Elements.com: Astatine - http://www.chemicalelements.com/elements/at.html
Basic information, atomic structure, and table of isotopes. |
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EnvironmentalChemistry.com: Astatine - http://environmentalchemistry.com/yogi/periodic/At.html
Atomic structure, chemical and physical properties, and table of nuclides. |
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Radiochemistry of Astatine - http://library.lanl.gov/cgi-bin/getfile?rc000018.pdf
Full text of the monograph by Evan H. Appelman (Argonne National Laboratory, Lemont, Illinois). |
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ChemGlobe: Astatine - http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/85.html
Electronic, thermal, and steric data, along with a table of isotopes. |
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Visual Elements: Astatine - http://www.chemsoc.org/viselements/pages/astatine.html
General and physical information, source, key isotopes, and ionisation energies. |
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Britannica Nobel Prize: Astatine - http://www.britannica.com/nobel/micro/38_12.html
Overview and basic data. |