Question

The Equivalent weight of an element is $13$. It forms an acidic oxide with which $KOH$ forms a salt isomorphous with $K_{2}S{O}_4$. The atomic weight of element is :

• A. 13
• B. 26
• C. 52
• D. 78

Answer 1

The correct option is D 78

$K_{2}M{O}_4$ and $K_{2}S{O}_4$ are isomorphous.
Valency of S and M should be same $=6$
Atomic weight $=EW\times Valency=13.00\times 6=78$