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Many radioactive atoms that have large masses undergo radioactive decay by releasing a particle that is identical to a helium-4 nucleus

What changes in the original atom are expected as a result of this natural phenomenon

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metchelle

The atom goes through radioactive decay. It a random
phenomenon and cannot be predicted. There are several types of decay, depending
on the particles that the atom emits. Alpha decay happens when the nucleus
ejects an alpha particle, in contrast, beta decay happens when the nucleus
ejects an electron, positron and a neutrino. 

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