What is the difference between covalent bonds and ionic bonds? a. covalent bonds involve the sharing of pairs of electrons between atoms; ionic bonds involve the sharing of single electrons between atoms. b. covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the electrical attraction between atoms. c. covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the sharing of protons between atoms. d. covalent bonds involve the transfer of electrons between atoms; ionic bonds involve the sharing of electrons between atoms.