Answer:
A neutron contains two “down” quarks and one “up” quark, while a proton contains two up quarks and one down quark. Since an up quark (u) has a charge of 2e/3, where –e is the charge of the electron, and a down quark (d) has a charge of –e/3, neutrons are neutral and protons have a positive charge.
Explanation:
Just copy it.
