Question

Complete the following sentence :

The atomic number of a radioactive element is not changed when it emits________.

• A. $\gamma$-radiations
• B. $\alpha$-radiations
• C. $\beta$-radiations
• D. None of the above
  

Answer 1

The correct option is A $\gamma$-radiations

The emission of gamma rays does not alter the number of protons or neutrons in the nucleus but instead has the effect of moving the nucleus from a higher to a lower energy state.