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Curium is a synthetic chemical element; it has symbol Cm and atomic number 96. This transuranic actinide element was named after eminent scientists Marie and Pierre Curie, both known for their research on radioactivity.
Curium (96 Cm) is an artificial element with an atomic number of 96. Because it is an artificial element, a standard atomic weight cannot be given, and it has no stable isotopes . The first isotope synthesized was 242 Cm in 1944, which has 146 neutrons.
Ralph Arthur James (23 September 1920 in Salt Lake City, Utah [1] – 24 February 1973 in Alamo, California) was an American chemist at the University of Chicago who co-discovered the elements curium (1944) and americium (1944–1945). Later he worked at UCLA and for the Lawrence Livermore laboratory in California.
96. curium, Cm, named after Pierre and Marie Curie, scientists who separated out the first radioactive elements (1944), as its lighter analog gadolinium was named after Johan Gadolin. 97. berkelium, Bk, named after Berkeley, where the University of California, Berkeley is located (1949). 98.
[24] [25] [26] 252 Cf, 96.9% of the time, alpha decays to curium-248; the other 3.1% of decays are spontaneous fission. [11] One microgram (μg) of 252 Cf emits 2.3 million neutrons per second, an average of 3.7 neutrons per spontaneous fission. [27] Most other isotopes of californium, alpha decay to curium (atomic number 96). [11]
96 Zr A significant amount of zirconium is formed by the fission process; some of this consists of short-lived radionuclides ( 95 Zr and 97 Zr which decay to molybdenum ), while almost 10% of the fission products mixture after years of decay consists of five stable or nearly stable isotopes of zirconium plus 93 Zr with a halflife of 1.53 ...
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Curium 96 Cm [247] Berkelium 97 Bk [247] Californium 98 Cf [251] Einsteinium 99 Es [252] Fermium 100 Fm [257] Mendelevium 101 Md [258] Nobelium 102 No [259]