96 Cm Curium
Actinoid, mass: 247 u, no stable and no natural isotopes.Click image to magnify. This is only an illustration, not curium itself. Chemically similar to gadolinium, but highly radioactive, the metal produces much heat. The synthetic element curium is usually made from plutonium and mostly decays to this again. The most stable isotope, 247Cm, has a quite long half-life of 15.6 million years. However, this is scarcely produced. Much more frequent are the significantly more unstable isotopes 242 and 244, which emit very intense radiation. Therefore, the enormously dangerous curium is used only rarely and in safe environments, like in space missions. The Mars rovers had it with them in their X-ray spectrometers. Long and short lived curium isotopes are also produced unintentionally in atomic reactors and then end up in nuclear waste.
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Page last changed on March 10. 2011
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