Fm (fermium)

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Fm

Fm symbol for the element fermium .

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"Fm." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 16 Dec. 2009 <http://www.encyclopedia.com>.

"Fm." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. (December 16, 2009). http://www.encyclopedia.com/doc/1E1-Fm.html

"Fm." The Columbia Encyclopedia, Sixth Edition. 2008. Retrieved December 16, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-Fm.html

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Fm

The Oxford Pocket Dictionary of Current English | 2009 | © The Oxford Pocket Dictionary of Current English 2009, originally published by Oxford University Press 2009. (Hide copyright information) Copyright

Fm • symb. the chemical element fermium.

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fermium

World Encyclopedia | 2005 | Â© World Encyclopedia 2005, originally published by Oxford University Press 2005. (Hide copyright information) Copyright

fermium (symbol Fm) Radioactive metallic transuranic element of the actinide series. US nuclear scientist Albert Ghiorso (1915– ) and colleagues identified it in 1952 as a decay product of U²⁵⁵ from the first large hydrogen bomb explosion. Ten isotopes have subsequently been identified. Properties: at.no. 100; most stable isotope Fm²⁵⁷ (half-life 80 days).

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