Question

In gamma ray emission from a nucleus
(a) only the proton number changes
(b) both the neutron number and the proton number change
(c) there is no change in the proton number and the neutron number
(d) only the neutron number changes

Answer 1

(c) : γ-ray emission takes place due to deexcitation of the nucleus. Therefore during γ-ray emission, there is no change in the proton and neutron number.