Correct answer is (d) [Ag^+]^2 [CrO4^2-]^2
Explanation: The formula for silver chromate is Ag2CrO4. On the other hand, silver dichromate is formulated as Ag2Cr2O7. If a compound is represented as AXBY then the solubility product expression is written in terms of its molar concentration as [A^+]^X [B^–]^Y. Similarly, the solubility product expression for Ag2CrO4 is given as [Ag^+]^2 [CrO4^2-]^2.