Chemistry - Ionic Equilibrium Question with Solution | TestHub

${\text{M(OH)}}_{\text{x}}\rightleftharpoons {\text{M}}_{{\text{10}}^{-\text{3}}}^{\text{x+}}\text{+}\underset{{\text{x×10}}^{-\text{3}}}{{\text{xOH}}^{-}}$
${\text{K}}_{\text{sp}}\text{=}{\text{[M}}^{\text{x+}}\text{]}\text{×}{{\text{[OH}}^{-}\text{]}}^{\text{x}}$
$\text{4}\text{×}{\text{10}}^{-\text{9}}\text{=}({\text{10}}^{-\text{3}})\text{×}{\text{(x}\text{×}{\text{10}}^{-\text{3}}\text{)}}^{\text{x}}$
On solving$\text{x}\text{=}\text{2}$