The charge of an atom is equal to the number of protons July 8, 2019 16 32 64 128 The charge of an atom Compared to the mass of a proton the mass of an electron is quizlet To find out the number of neutrons in an atom we need to know the following. quizlet Compared to the charge and mass of a proton an electron has Compared to the charge of a proton an electron has