what is meant by radioactivity ?
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the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei.
Som142004:
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Radioactivity is the process of spontaneous emission of radiations such as alpha,beta or gamma from the nucleus of atoms during their decay..It is a nuclear phenomenon...
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The property possessed by some elements or Isotopes of spontaneously emitting energetic particles by the disintegration of the atoms.
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