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  4. Oxidation number of sulphur in S2O2-3 “ is

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Q. Oxidation number of sulphur in $S_{2}O^{2-}_{3}$ “ is

Redox Reactions

Solution:

$\overset{*}{S_2}O_3^{2-}$
$2x + 3(-2) = - 2; $
$ x = +2$