For a sparingly soluble salt AB_2, the equilibrium concentrations of A^2+ ions and B^- ions are 1.2 × 10^-4 M and 0.24 × 10^-3 M, respectively. The…

For a sparingly soluble salt $\displaystyle \mathrm{AB}_2$, the equilibrium concentrations of $\displaystyle \mathrm{A}^{2+}$ ions and $\displaystyle \mathrm{B}^{-}$ions are $\displaystyle 1.2 \times 10^{-4} \mathrm{M}$ and $\displaystyle 0.24 \times 10^{-3} \mathrm{M}$, respectively. The solubility product of $\displaystyle \mathrm{AB}_2$ is :