QJEEM15Ch7ef5: JEE Main 2015 Chemistry - Class 11 JEEM15Ch7ef5 Solution: Which one of the following alkaline earth metal sulphates has…

In alkaline earth metals, ionic size increases down the group. The lattice energy remains constant because sulphate ion is so large, so that small change in cationic size does not make any difference. On moving down the group the degree of hydration of metal ions decreases very much leading to decrease in solubility.

$\therefore$ \,\,\,BeS{O_4} > MgS{O_4} > CaS{O_4} > SrS{O_4} > BaS{O_4}