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The `Ew` of an element is `13`. It forms an acidic oxide which `KOH` forms a salt isomorphous with `K_(2)SO_(4)`. The `Aw` of element is a. `13`, b. `

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The `Ew` of an element is `13`. It forms an acidic oxide which `KOH` forms a salt isomorphous with `K_(2)SO_(4)`. The `Aw` of element is
a. `13`, b. `26`, c. `52`, d. `78`
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`MSO_(4)` and `K_(2)SO_(4)` are isomorphous.
Thus, valency of `S` and `M` should be same `= 6`.
`:. Aw = Ew xx "Valency"`
`= 13 xx 6 = 78`.
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