Which force is always attractive and has a very small range?

Neutrons and protons, both nucleons, are affected by the nuclear force

identically.

Since protons have charge +1 e, they experience an electric force that tends to push them apart, but at short range the attractive nuclear force is strong enough to overcome the electromagnetic force.

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach

answerscientific theory;