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Nature of Matter

What is meant...

Question

What is meant by radioactivity? Name two radioactive substances.

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Solution

Radioactivity is a nuclear phenomenon of spontaneous emission of $α (Alpha) or β (Beta) or γ (Gamma)$ radiations from the nucleus of atoms during their decay.
Uranium and Plutonium exhibit radioactivity and are examples of radioactive substance

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Nature of Matter

Standard XII Chemistry

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