Answer: Some isotopes of an element may be unstable and their nuclei spontaneously disintegrate . accompanied by radiations of smaller particles and energy. These isotopes are called radio isotopes and the phenomenon is called radioactivity.
Answer: Some isotopes of an element may be unstable and their nuclei spontaneously disintegrate . accompanied by radiations of smaller particles and energy. These isotopes are called radio isotopes and the phenomenon is called radioactivity.
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