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Valency and Oxidation State

Find the oxid...

Question

Find the oxidation number of I in $K I O_{3}$ .

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Solution

In $K I O_{3}$ $K$ is in +1 $O$ is in -2 and the net charge on $K I O_{3}$ is zero.
Let the oxidation state of I be x
$1+x-2(3) = 0 $
$x = 5$
So oxidation number of I in $K I O_{3}$ is $5$ .

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