chem(urgent)

the solubility of the hydroxides of Group II elements in decending order.
(Group II elements :Mg,Ca,Sr,Ba)
Ba(OH)2 > Sr(OH)2 > Ca(OH)2 > Mg(OH)2
Most soluble --------> Least soluble
Solubility product for Mg(OH)2 is 2 * 10^-5
Solubility product for Ca(OH)2 is 1.53 * 10^-3
Solubility product for Sr(OH)2 is 3.37 * 10^-3
Solubility product for Ba(OH)2 is 1.5 * 10^-2
I hope this can help with your understanding. =)