Protons are positively charged and repel other protons. Which order particle is found in the nucleus and separates protons so that the strong force can hold the nucleus together?
A neutron, I'm technically not really guessing but I'm kind of guessing because there's only 3 particles in a atom, a proton, neutron and electron, for only protons and neutrons live in the nucleus so be deduction would be neutrons.
