Which of the following assertions are correct?
(i) A neutron can decay to a proton only inside a nucleus
(ii) A proton can change to a neutron only inside a nucleus
(iii) An isolated neutron can change into a proton
(iv) An isolated proton can change into a neutron
A. A neutron can decay to aprotion only inside a nucleus .
B. Aproton can change to a neutron only inside a nucleus.
C. An isolated neutron can change into a proton .
D. An isolated proton can change into a neutron.
