The Bohr radius, a = 5.29 10-11 meters, represents the most probable distance between the location of an electron and a proton in the nucleus of a hydrogen atom. A Calculate the most probable electric force present in between an electron and a proton in the nucleus of a hydrogen atom. B Calculate the most probable gravitational force present in between an electron and a proton in the nucleus of a hydrogen atom. C Identify whether gravitational or electric forces between protons and electrons are stronger.