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Chemical Elements.com: Astatine -
Basic information, atomic structure, and table of isotopes.
http://www.chemicalelements.com/elements/at.html Britannica Nobel Prize: Astatine -
Overview and basic data.
http://www.britannica.com/nobel/micro/38_12.html LANL: Astatine -
History, uses, production, and properties.
http://periodic.lanl.gov/elements/85.html Visual Elements: Astatine -
General and physical information, source, key isotopes, and ionisation energies.
http://www.chemsoc.org/viselements/pages/astatine.html Wikipedia: Astatine -
Properties of the element, including its history, applications, and characteristics.
http://en.wikipedia.org/wiki/Astatine WebElements: Astatine -
Extensive information on history and properties.
http://www.webelements.com/webelements/elements/text/At/key.html EnvironmentalChemistry.com: Astatine -
Atomic structure, chemical and physical properties, and table of nuclides.
http://environmentalchemistry.com/yogi/periodic/At.html It's Elemental: Astatine -
Basic physical and historical information.
http://education.jlab.org/itselemental/ele085.html Radiochemistry of Astatine -
Full text of the monograph by Evan H. Appelman (Argonne National Laboratory, Lemont, Illinois). [PDF] <small>(March, 1960)</small>
http://library.lanl.gov/cgi-bin/getfile?rc000018.pdf Lenntech: Astatine -
Physical data, chemical properties, and health effects.
http://www.lenntech.com/Periodic-chart-elements/At-en.htm ChemGlobe: Astatine -
Electronic, thermal, and steric data, along with a table of isotopes.
http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/85.html
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