fermium
PubChem Notes:
Fermium Fermium. A man-made radioactive actinide with atomic symbol Fm, atomic number 100, and atomic weight 257. Its known isotopes range from 244-254 and 256-258. Its valence can be +2 or +3. Like einsteinium, it was discovered in 1952 in the debris from a thermonuclear explosion.
Fm - definition from Biology-Online.org
[symbol for fermium.
MediLexicon fermium - Medical Dictionary Definition for Term 'fermium'
[1. Radioactive element, artificially prepared in 1955, atomic no. 100, atomic wt. 257.095; 257Fm has the longest known half-life (100.5 days) of this transuranium element.
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