pH of a saturated solution of M(OH)2 is 10. Solubility product of M(OH)2 will be
pH=10 ; pOH=4; OH− = 10−4 M MOH2 ⇌ M +2S + 2OH−2S If 2S=10−4 S=10−42 KSP of MOH2 = 10−42 10−42 =0.5 × 10−12 =5 × 10−13