Solubility of alkaline earth metal sulphates in water decreases in the sequence:
Sr > Ca > Mg > Ba
Ba > Mg > Sr > Ca
Mg > Ca > Sr > Ba
Ca > Sr> Ba > Mg
The solubility of the sulphates decreases as we go down the group of alkaline earth metals
The decreasing order of sulphates is: Mg > Ca > Sr > Ba
Solubility of the alkaline earth metal sulphates in water decreases in the sequence :