Stable and Unstable Nuclei

The video explains how to determine if an atom is stable by examining its subatomic particles and the forces holding them together. It introduces radioactive decay, where unstable nuclei emit radiation to become stable. The video covers three types of decay: alpha, beta minus, and beta plus, detailing how each affects atomic and mass numbers. It also explains how to use a proton-neutron graph to predict decay types based on an isotope's position relative to the stability line. The video concludes with a recap of how unstable nuclei balance themselves through decay.

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