Which of the following statements about nuclear forces is not true?
1
The nuclear force between two nucleons falls rapidly to zero as their distance is more than a few femtometres.
2
The nuclear force is much weaker than the Coulomb force.
3
The force is attractive for distances larger than 0.8 fm and repulsive if they are separated by distances less than 0.8 fm.
4
The nuclear force between neutron-neutron, proton-neutron and proton-proton is approximately the same.
5
Not Attempted