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Actinium (pronounced /ækˈtɪniəm/, ak-TIN-nee-əm) is a radioactive chemical element with the symbol Ac and atomic number 89, which was discovered in 1899. ...
en.wikipedia.org/wiki/Actinium - Similar
Extensive information on history, uses, occurrence, compounds, and properties.
www.webelements.com/actinium/ - Similar
Actinium was discovered in 1899 by André-Louis Debierne, a French chemist, ... Actinium is a rare element that is present in uranium ores in tiny amounts, ...
education.jlab.org/itselemental/ele089.html - Similar
chemical properties, health and environmental effects of actinium.
www.lenntech.com/periodic/elements/ac.htm - Similar
22 Feb 2007 ... Comprehensive information for the element Actinium – Ac is provided by this page including scores of properties, element names in many ...
environmentalchemistry.com/yogi/periodic/Ac.html - Similar
15 Dec 2003 ... Actinium-227, a decay product of uranium-235, is a beta emitter with a 21.6-year half-life. Its principal decay products are thorium-227 ...
periodic.lanl.gov/elements/89.html - Similar
Information about Actinium - general properties, discovery, states, energies, appearance and characteristics.
www.chemicool.com/elements/actinium.html - Similar
Basic information, atomic structure, and isotopes.
www.chemicalelements.com/elements/ac.html - Similar
Since its establishment in 1993, Florham Park, NJ based Actinium Pharmaceuticals ,Inc. has been focused on the development of therapeutics utilizing bismuth ...
www.actiniumpharmaceuticals.com/ - Similar
Actinium is a rare, extremely radioactive metal that glows in the dark with an eerie blue light. It was discovered twice. ...
www.vanderkrogt.net/elements/elem/ac.html - Similar
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