Assertion : `SO_(4)^(2-)` is estimated as `BaSO_(4)`, but not as `MgSO_(4)`
Reason : Ionic radius of `Mg^(2+)` is smaller than that of `Ba^(2+)`

Options

A. If both (A) and (R) are correct, but (R) is not the correct explanation of (A).
B. If both (A) and (R) are correct, but (R) is not the correct explanation of (A)
C. If (A) is correct, but (R) is incorrect.
D. If both (A) and (R) are incorrect.

Answer

B

Explanation

`BaSO_(4)` is insoluble but `MgSO_(4)` is soluble.