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n. Symbol Cm
A silvery metallic synthetic radioactive transuranic element, having isotopes with mass numbers ranging from 233 to 252. The most stable isotope (Cm-247) has a half-life of 15.6 million years. Atomic number 96; melting point 1,345°C; specific gravity (calculated) 13.51; valence 3, 4. See Periodic Table.
[After Marie Curie and Pierre Curie.]
(Elements & Compounds) a silvery-white metallic transuranic element artificially produced from plutonium. Symbol: Cm; atomic no: 96; half-life of most stable isotope, 247Cm: 1.6 x 107 years; valency: 3 and 4; relative density: 13.51 (calculated); melting pt: 1345±400°C
[C20: New Latin, named after Pierre and Marie Curie]
cu•ri•um(ˈkyʊər i əm)
a synthetic radioactive element produced from plutonium. Symbol: Cm; at. no.: 96.
Symbol Cm A synthetic, silvery-white, radioactive metallic element of the actinide series that is produced artificially from plutonium or americium. Curium isotopes are used to provide electricity for satellites and space probes. Its most stable isotope has a half-life of 16.4 million years. Atomic number 96. See Periodic Table.
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|Noun||1.||curium - a radioactive transuranic metallic element; produced by bombarding plutonium with helium nuclei|