Luke Edition Elective (3-5) Chapter 3 "Nuclear Nucleus and Radioactivity" ppt 1. The decay of the nucleus: it means that the nucleus becomes a new nucleus after releasing alpha particles or beta particles, but this does not mean that there are alpha particles and electrons in the nucleus. 2. Classification of decay: According to the types of particles released by nuclear decay, decay is divided into alpha decay and beta decay. Both types of decay are accompanied by γ-ray emission; no matter what kind of decay, the nuclear charge number and mass number before and after decay are conserved. This is also the principle of writing decay equation and nuclear reaction equation.
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