All nuclei consist of two type of particles-protons and neutrons. Nuclear force is the strongest force. Stability of nucleus is determined by the neutron-proton ratio or mass defect or Binding energy per nucleons or packing fraction. Shape of nucleus calculated by quadrupole moment. Spin of nucleus depends on even or odd mass number. Volume of nucleus depends on the mass number. Whole mass of atom (nearly 99%) is centered at the nucleus. Magnetic moment of nucleus is measured in terms of the nuclear magnetons.

(i) The correct statements about nuclear force is/are