But all of these chemical bonds have the same thing in common. They are all electric in nature. So all chemical bonds exist because of the existence of charge on different atoms and different molecules. So, for example, if we have two atoms that are distance D apart and these atoms are stationary and atom one has a partial positive charge, and atom two has a partial negative charge, then these two atoms will attract each other as a result of that attractive electric force, now, because these are assumed to be stationary, that force is electrostatic. And the equation that gives us the magnitude of that electrostatic force is Coulomb's equation. So the electrostatic force between the two charges is equal to So the numerator is the product of K. A constant.