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Curium (Cm): Fun Facts and Information About the Element


What is the symbol? Cm
What is the atomic number? 96
What is the atomic weight? 247
What is the melting point in Celsius? 1340
What is the density (g/cm3)? 13.5
What year was it discovered? 1944
Who discovered the element? “Glenn T. Seaborg, Ralph A. James, Albert Ghiorso”
What group is the element in? 102
What is the ionization energy? 5.9915
What element category is it in? Actinoids

Where is Curium Found?

Minute amounts of curium probably exist in natural deposits of uranium, as a result of a sequence of neutron captures and beta decays sustained by the very low flux of neutrons naturally present in uraniumores. The presence of natural curium, however, has never been detected. 242Cm and 244Cm are available in multigram quantities. 248Cm has been produced only in milligram amounts.

What is Curium Used For?

242Cm generates about three watts of thermal energy per gram. This compares to one-half watt per gram of 238Pu, suggesting that curium can be used for as a power source.