1.

Solubility of the alkaline earth's metal sulphates in water decreases in the sequence…

Answer»

`Mg gt Ca gt SR gt Ba`
`Ca gt Sr gt Ba gt Mg`
`Sr gt Ca gt Mg gt Ba`
`Ba gt Mg gt Sr gt Ca`

SOLUTION :DUE to very small size of `Mg^(+2), Mg^(+2)` SHOWS maximum hydration energy.


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