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Which of the following pairs of transition metal ions are the strong oxidizing agents in aqueous solutions?

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${Mn}^{3 +}$ and ${Co}^{3 +}$

${Ti}^{2 +}$ and ${Cr}^{2 +}$

$V^{2 +}$ and ${Cr}^{2 +}$

$V^{2 +}$ and ${Fe}^{2 +}$

answer is B.

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Detailed Solution

$M n^{+ 2}$ is stable than $M n^{+ 3}$ due to $d^{5}$ configuration.
In aqueous solution $C o^{2 +}$ is more stable than $C o^{+ 3}$

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