A radioactive nuclide emits a β-particle. The atomic number (proton number) of the nucleus number of ______?
General Science / General Science Class 10 MCQs — Multiple-choice practice
- A. Decreases by 2
- B. Decreases by 4
- C. Stays the same
- D. Increases by 1
Correct answer
Increases by 1
Explanation
Explanation When a radioactive nuclide emits a beta (β) particle , it undergoes beta decay. In beta decay, a neutron in the nucleus is converted into a proton and an electron (the beta particle). As a result, the atomic number (proton number) of the nucleus increases by 1.
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