Question

The valence of sulphur in $S{O}_4^{2-}$ is:

• A. 5
• B. 4
• C. 6
• D. none of these

Answer 1

Answer: (C)

6

Solution:- (C) $6$

Let the oxidation state of $S$ in ${S{O}_4}^{2-}$ be $x$.

Now,

$x+4\times (-2)=-2$

$x-8=-2$

$\Rightarrow x=8-2=+6$

Hence the valence of Sulphur in ${S{O}_4}^{2-}$ is $6$.