All of the following statements concerning ionic compounds are correct EXCEPT
A) as the ion charges increases, the attraction between the ions increases
B) ionic compounds form extended 3D networks called crystal lattices
C) ionic crystals tend to be rigid and they cleave along planes
D) positive and negative ions are attracted to each other by electrostatic forces
E) the electrostatic forces are weaker in CaO than in NaCl
Answer: E