MCQ
he ratio of oxygen atom having $−2$ and $−1$ oxidation numbers in $\text{S}_2\text{O}^{2-}_8$​ is $.........$
  • A
    $1$
  • B
    $2$
  • $3$
  • D
    $4$

Answer

Correct option: C.
$3$
The ratio of oxygen atom having $−2$ and $−1$ oxidation numbers in $\text{S}_2\text{O}^{2-}_8$​ is three as only one peroxy linkage is present.
So, we can see from the structure below that the number of oxygen atoms having $−2$ oxidation state is $6$ while those having $−1$ oxidation state is $2$.

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