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(D) For a sparingly soluble salt $A_x B_y$,the solubility product constant is given by $K_{sp} = (xS)^x (yS)^y = x^x y^y S^{(x+y)}$,where $S$ is the m

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Produces maximum number of ions

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(D) For a sparingly soluble salt $A_x B_y$,the solubility product constant is given by $K_{sp} = (xS)^x (yS)^y = x^x y^y S^{(x+y)}$,where $S$ is the molar solubility.From this relation,$S = [K_{sp} / (x^x y^y)]^{1/(x+y)}$.As the total number of ions produced $(x+y)$ increases,the denominator $(x^x y^y)$ increases significantly,which leads to a decrease in the value of $S$ for a given $K_{sp}$.Therefore,the salt that produces the maximum number of ions will have the lowest solubility.

Among different types of sparingly soluble salts having nearly the same solubility product constants $(K_{sp})$,the least soluble salt is that which:

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