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Nuclear Chemistry and Radioactivity — Chemistry STD 11 Science — Question

Maharashtra BoardEnglish MediumSTD 11 ScienceChemistryNuclear Chemistry and Radioactivity1 Mark
Question
Define radioactivity and give examples of two radioactive elements.
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Answer

Radioactivity is a phenomenon in which the nuclei spontaneously emit a nuclear particle and gamma radiation transforming to a different nuclide. e.g. Uranium and radium

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