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Thermionic Emission and Radioactivity — Physics STD 10 — Question

ICSE BoardEnglish MediumSTD 10PhysicsThermionic Emission and Radioactivity1 Mark
Question
Explain briefly what changes take place within the nuclei when beta particles are emitted by a radioactive substance.
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Answer

The mass number remains unchanged but atomic number increases by 1 of the nuclei undergoing such a change.

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