In a radioactive decay, neither the atomic nu | vedclass

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(D) In a radioactive decay process, if the atomic number $(Z)$ and the mass number $(A)$ of the nucleus remain unchanged, it implies that the nucleus

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Photon

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(D) In a radioactive decay process, if the atomic number $(Z)$ and the mass number $(A)$ of the nucleus remain unchanged, it implies that the nucleus has transitioned from a higher energy state to a lower energy state without changing its composition.This process is known as gamma $(\gamma)$ decay.During gamma decay, the nucleus emits a high-energy electromagnetic radiation called a photon.Since a photon has zero rest mass and zero charge, its emission does not alter the atomic number or the mass number of the parent nucleus.Therefore, the correct option is $(d)$.

In a radioactive decay, neither the atomic number nor the mass number changes. Which of the following would be emitted in the decay process?

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