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Strongest oxidant among the following is

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${VO}^{2 +}$

${Cr}_{2} {O_{7}}^{2 -}$

$Mn {O_{4}}^{-}$

$Mn {O_{4}}^{2 -}$

answer is C.

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Detailed Solution

$Mn {O_{4}}^{-}$ has the highest oxidation state

$Mn$ in $Mn {O_{4}}^{-}$ is +7

$Mn {O_{4}}^{-}$ is the best oxidizing agent

Electronegativity increases when oxidation state increases.

The highest oxidation state is considered as +7, or even +8.

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