What is meant by radioactivity
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Explanation:
A radioactive atom is one that spontaneously emits energetic particles or waves (known as radiation). This radiation is emitted when an unstable (i.e. radioactive) nucleus transforms to some other nucleus or energy level.
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Hallo dear ,
Radioactivity is a spontaneous nuclear phenomenon in which an unstable nucleus undergoes a decay with the emission of some particles (alpha,beta) and electromagnetic radiation(gama-rays).
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