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  4. Which one among the following is the mild oxidizing agent?

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Q. Which one among the following is the mild oxidizing agent?

NTA AbhyasNTA Abhyas 2020Redox Reactions

Solution:

$\text{CrO}_{\text{2}}\text{Cl}_{\text{2}}$ is mild oxidising agent.

In this compound $Cr$ is surrounded by less electrongative $\text{Cl}$ atom rather than oxygen so it does not produce so much positve charge on chromium in comparision to other compound containing highly electronegative $\text{O}$ atom. So, due to relativily low value of Standard Reduction potential it act as mild oxidising agent.

$\text{KMnO}_{\text{4}}\text{,HNO}_{\text{3}}$ and $\text{K}_{\text{2}}\text{Cr}_{\text{2}}\text{O}_{\text{7}}$ are strong oxidising agent due to high Standard Reduction potential.