Compare the electric repulsion of the protons in the uranium nucleus (element 92) with the repulsion of the protons in the nucleus of barium (element 56).Which repulsion is larger?

uranium nucleus

Explanation:

The charge on protons is positive. Hence repulsion is to be expected between the like charges.

The magnitude of repulsion between protons increases with the number of protons present in the nucleus.

Uranium possess 92 protons while barium possess only 56 protons. Hence uranium having a larger number of protons will experience a larger repulsion in its nucleus compared to barium.