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Assertion (A): Sulphur is estimates as B...

Assertion (A): Sulphur is estimates as `BaSO_(4)` and not as `MgSO_(4)`.
Reason (R ): The ionic radius of `Mg^(2+)` is less than that of `Ba^(2+)`

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The correct Answer is:
b,c
Sulphate is estimated as `BaSO_(4)` and as `MgSO_(4)` because `MgSO_(4)` is soluble in water and does and not form a precipitate .The ionic radius of `Mg^(2+)` is smaller than that of `Ba^(2+)` because on moving down in a group ionic radii increase
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