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The process of isotopes breaking down and emitting particles, such as alpha or beta, to form a new substance

User Mdaniel
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3 votes
it is known as radioactivity
radioactivity is spontaneous disintegration of the atom of an element into small particles to cive out alpha,gamma or beta particles or the combination of all the three and heat
User Manxing
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It is radioactive decay
User Kyriaki
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