Question

(i) What characteristic property of nuclear force explains the constancy of binding energy per nucleon (BE/A) in the range of mass number ‘A’ lying 30 < A < 170? 

(ii) Show that the density of nucleus over a wide range of nuclei is constant independent of mass number A

Answer 1

(i) Saturation or short range nature of nuclear forces.
(ii) We have
R = R₀ A^1/3
Let m = mass of nucleon