Number of electrons transferred in each case when ${\rm{KMn}}{{\rm{O}}_4}$ acts as an oxidising agent to give ${\rm{Mn}}{{\rm{O}}_2},{\rm{\;M}}{{\rm{n}}^{2 + }},{\rm{\;Mn}}{\left( {{\rm{OH}}} \right)_3}\;$ and ${\rm{MnO}}_4^{2 - }$, are respectively :

NEET UG CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

1 Medium

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Application +4 | -1

Number of electrons transferred in each case when

\mathrm{KMn}{\mathrm{O}_4}

acts as an oxidising agent to give

\mathrm{Mn}{\mathrm{O}_2},\mathrm{\;M}{\mathrm{n}^{2 + }},\mathrm{\;Mn}{\left( {\mathrm{OH}} \right)_3}\;

and

\mathrm{MnO}_4^{2 - }

, are respectively :

View answer and explanation

Correct option: A

3, 5, 4 and 1

Option A (3, 5, 4 and 1) is correct because the number of electrons transferred corresponds to the change in oxidation state of Mn in each reduction.