Lecture 12: Radioactivity - PowerPoint PPT Presentation


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2. Modes of decay. A nucleus will be radioactive if by decaying it can lower the overall mass, leading to larger (negative) nuclear binding energyYet another manifestation of the 2nd Law of thermodynamicsNuclei can spontaneously transform to lower mass nuclei by one of five processes a-decay b-decaypositron emissionelectron capturespontaneous fissionEach process transforms a radioactive parent nucleus into one or more daughter nuclei..

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