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STD 11 - 7. Redox reactions — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 7. Redox reactions4 Marks
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.

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