Crystals of high ionic charge are less soluble. why?As we know,when hydration energy is less than lattice energy the ions are not soluble. So,crystals of high ionic charges have less hydration energy right?And it does make sense to me as higher the charge ,greater the lattice energy because lattice energy is proportional to charge.And higher the charge ,easier to form bond with water so greater is extent of solvation so less energy required for hydration,hence less hydration energy. Thus,overall the criteria to be less soluble is fulfilled i.e lattice energy is greater than hydration energy. Is my reasoning correct?