MCQ
The most stable oxidation state of $Mn$ is
- ✓$2$
- B$4$
- C$5$
- D$7$

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$A$.$p$-xylene $B$.bromobenzene $C$.mesitylene $D$,nitrobenzene $E$.benzene
Choose the correct answer from the options given below.
$MnO_4^ - \, + \,x{e^ - }\,\xrightarrow[{(Alkaline\,\,medium)}]{}MnO_4^{2 - }$
$MnO_4^ - \, + \,y{e^ - }\,\xrightarrow{{(Acidic\,\,medium)}}M{n^{2 + }}$
$MnO_4^ - \, + \,z{e^ - }\,\xrightarrow{{(Neutral\,\,medium)}}Mn{O_2}$