Question

A radioactive nuclide emits $\gamma$-rays due to:

• A. $K$-electron capture
• B. nuclear transition from higher to lower energy state
• C. presence of greater number of neutrons than protons
• D. presence of greater number of protons than neutrons

Answer 1

The correct option is B nuclear transition from higher to lower energy state

After $\alpha$, $\beta$-emission, nucleus goes to excited state; when it returns to normal state, emission of $\gamma$-radiations takes place.