The following table gives numbers of electrons, protons, and neutrons in atoms or ions of a number of elements. Atom or lon of Element Species A Species B Species c Number of Electrons 5 36 18 Number of Protons 5 35 19 Number of Neutrons 5 46 20 The following table gives numbers of electrons, protons, and neutrons in atoms or ions of a number of elements. Atom or lon of Element Species A Species B Species c Number of Electrons 5 36 18 Number of Protons 5 35 19 Number of Neutrons 5 46 20