Heavy stable nuclei have more neutrons than protons. This is because of the fact that (a) neutrons are heavier than protons (b) electrostatic force between protons are repulsive (c) neutrons decay into protons through beta decay (d) nuclear forces between neutrons are weaker than that between protons
Correct option is B) Electrostatic force between proton-proton is repulsive which causes the un-stability of nucleus. So, neutrons ar larger than proton
