Bonding electrical force explanations

The chloride ion is not attached directly to the nitrogen but is held simply through electric forces by the ammonium ion/ The two valence spheres of Werner s complexes thus had a simple explanation. The inner valences were electron pair bonds often formed by the donor-acceptor process. The outer valences were electrovalent in character. 

The existence of an electrical double layer at the interface between a metal and a polymer adhering to it has been satisfactorily demonstrated. Undoubtedly, the electrostatic forces developed from this interaction could contribute to the total adhesive bond strength. However, the theories that have been advanced are less than rigorous and have been subject to severe criticism. Nevertheless, there are some phenomena that cannot be explained without recourse to this explanation in some form (see Electrical adhesion). 

---