Radioactive Isotopes 4
Radioactive Isotopes 4 : Nuclei which spontaneously change to other nuclei, usually by the ejection of a particle such as an electron, a neutron, or a proton. Gamma rays often accompany this radio-active disintegration. The nuclear reaction known as "fission" results in by-product materials comprising a number of elements many of which are initially radio-active. See: also: Isotopes
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