The atomic number of a radioactive element is not changed, when it emits _____________ rays?
Correct answer: C. γ
- A. α
- B. β
- C. γ
- D. α & β
Explanation
Gamma emission releases electromagnetic radiation without changing the nucleus's proton or neutron count, so the atomic number remains unchanged. Alpha emission lowers atomic number by 2, while beta emission changes it by 1.
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