Noun
a radioactive transuranic metallic element produced by bombarding plutonium with neutrons
Source: WordNetExperiments have been performed on injecting einsteinium citrate (as well as fermium compounds) to dogs. Source: Internet
Cation-exchange and solvent extraction studies led to the conclusion that mendelevium was a trivalent actinide with an ionic radius somewhat smaller than that of the previous actinide, fermium. Source: Internet
Isotopes main Decay pathway of fermium-257 There are 19 isotopes of fermium listed in N UBASE 2003, citation with atomic weights of 242 to 260, of which 257 Fm is the longest-lived with a half-life of 100.5 days. Source: Internet
Einsteinium and fermium were discovered by a team of scientists led by Albert Ghiorso in 1952 while studying the radioactive debris from the detonation of the first hydrogen bomb. Source: Internet
It is the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities, although pure fermium metal has not yet been prepared. Source: Internet
Nineteen isotopes of fermium are known with mass numbers of 242–260. Source: Internet