MCQ
Which of the following involves transfer of five electrons ?
- ✓$MnO_4^- \to Mn^{2+}$
- B$CrO_4^{2 - } \to C{r^{3 + }}$
- C$MnO_4^{2 - } \to Mn{O_2}$
- D$C{r_2}O_7^{2 - } \to C{r^{3 + }}$
✓
Answer
Correct option: A.
$MnO_4^- \to Mn^{2+}$
a
$O.N.$ of $Mn$ in $MnO_4^-$ is $+7$ and in $Mn^{+2}$ it is $+2$. The difference is of $5$ electrons.
$O.N.$ of $Mn$ in $MnO_4^-$ is $+7$ and in $Mn^{+2}$ it is $+2$. The difference is of $5$ electrons.
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