Consider the following statements about the four fundamental forces in nature.
(i) The strong nuclear force binds protons and neutrons in a nucleus.
(ii) The strong nuclear force is about ${10}^3$ times the electromagnetic force in strength.
(iii) The weak nuclear force is the weakest of all the four fundamental forces.
(iv) The range of the weak nuclear is about ${10}^{-16} \mathrm{m}$
The correct statement(s) is (are)