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, artificially produced radioactive chemical element; symbol Pm; at. no. 61; mass no. of most stable isotope 145; m.p. 1,042°C; b.p. 3,000°C (estimated); sp. gr. unknown; valence +3. Although the chemical and physical properties of promethium are not well...more
Promethium (pronounced /prɵˈmiːθiəm/, pro-MEE-thee-əm) is a chemical element with the symbol Pm and atomic number 61. It is notable for being the only other ...
en.wikipedia.org/wiki/Promethium - Similar
This WebElements periodic table page contains Essential information for the element promethium.
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15 Dec 2003 ... Searches for the element on earth have been fruitless, and it now appears that promethium is completely missing from the earth's crust. ...
periodic.lanl.gov/elements/61.html - Similar
The Element Promethium - Basic Physical and Historical Information.
education.jlab.org/itselemental/ele061.html - Similar
Promethium is the holding company for a group focused on carbon-related matters and the provision of low-carbon energy. The group's first focus area is the ...
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Since Promethium does not exist except in fission products, it was named for the courage and pain needed to synthesize new elements. ...
www.vanderkrogt.net/elements/elem/pm.html - Similar
Infomation on Promethium general properties, States, energies, appearance and Characteristics.
www.chemicool.com/elements/promethium.html - Similar
chemical properties, health and environmental effects of promethium.
www.lenntech.com/periodic/elements/pm.htm - Similar
Basic information, atomic structure, and isotopes.
www.chemicalelements.com/elements/pm.html - Similar
Promethium Marketing helps companies ignite love affairs between their brands and their most passionate customers.
promethiummarketing.com/ - Similar
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