The solubility product of a salt having general formula `MX_(2)` in water is `4xx10^(-12)`. The concentration of `M^(2+) ions` in the aqueous solution of the salt is:

Options

A. `2xx10^(-6)M`
B. `1xx10^(-4)M`
C. `1.6xx10^(-4)M`
D. `4.0xx10^(-6)M`

Answer

B

Explanation

`MX_(2)hArr underset(S)(M^(2+))+underset(2S)(2X^(-))`
`K_(SP)` of `MX_(2)= 4S^(3)= 4xx10^(-12)`
`:. S= 10^(-4)`
`:. [M^(2+)]= 10^(-4)M`