(Marie and Pierre Curie) Identified by Seaborg, James and Ghiorso in1944 at the Metallurgical Laboratory in Chicago. The most stable isotope is Cm-247 with a half-life of 16 million years. Possibly found in uranium ores, although never detected.
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rare earth metal, radioactive, 13 isotopes, accumulates in the bones, highly toxic, radiological hazard, destroys red cell formation