Ionic bonds, of course, are governed by Coulomb's Law, which is this mathematical
equation that describes the electrostatic interaction between
the positively-charged cations and the negatively-charged anions.
Remember the Coulomb's law tells us that the force of attraction or
repulsion depends on the product of this constant, the charges, divided
by the product of the shielding factor, times the distance squared.
Of course for ionic compounds, the charges, they could
be plus one and minus one, or plus one and
minus two, or plus two and minus two, just
depending on the charges of the ions in the species.
Well, those charges would appear in the numerator of Coulomb's Law.