Which of the following particles most easily penetrate the nucleus of an atom?
A. Proton
B. Nucleus
C. alpha particle
D. Deutron

Question

ghazi · Answer

Neutron can easily penetrate nucleus...because they are not repelled by electromagnetic field of nucleus. I think option B should be neutron rather than nucleus...because nucleus itself has to be penetrated .

unklerhaukus · Answer

to penetrate the nucleus the particle must over come the repulsion of positive chemical  charges

maheshmeghwal9 · Answer

@UnkleRhaukus @ghazi are right 100% 
only neutron has the capability to overcome the force of repulsion:D