Question

Solubility of alkaline earth metal hydroxides increases down the group. Give reason

Answer 1

Generally, the lattice energy and hydration energy of a solid decreases down the group due to increase in the size of metal ion.But in case of alkaline earth metal hydroxides, decrease in lattice energy is more rapid than the decreases in hydration energy.Due to this, the solubility of alkaline earth metal hydroxides increases down the group.