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fermium

   Also found in: Dictionary/thesaurus, Financial, Acronyms, Encyclopedia, Wikipedia, Hutchinson 0.04 sec.
fermium /fer·mi·um/ (Fm) (fer´me-um) a chemical element, at. no. 100.
fer·mi·um (fûrm-m, fr-)
n. Symbol Fm
A synthetic radioactive metallic element whose most stable isotope is Fm 257 with a half-life of approximately 100 days. Atomic number 100.

fermium (Fm)
[fur′mē·əm]
Etymology: Enrico Fermi, Italian physicist, 1901-1954
a synthetic transuranic metallic element. Its atomic number is 100; the mass of its longest-lived, best-known isotope is 257. Fermium was first detected in the debris from a hydrogen bomb explosion and later produced in a reactor.

fermium
a chemical element, atomic number 100, atomic weight 253, symbol Fm. See Table 6.


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The team studied less than 2 billionths of a gram of fermium painstakingly produced by Oak Ridge (Tenn.
The compilations contains K- and L x-ray transition and absorption edge energies for all of the elements from neon to fermium and includes carefully selected and evaluated experimental data and trusted estimates obtained from state-of-the-art theoretical procedures.
The idea that an element has never been named after a living scientist is incorrect, since elements 99 and 100 were named einsteinium and fermium while Einstein and Fermi were alive, though the names were not sanctioned officially until after they had died.
 
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