Question
Complete the following reactions.
$$\left( {\text{i}} \right)MnO_4^ - + 2{H_2}O + 3{e^ - } \to $$ $$\_\_\_\_ + 4O{H^ - }$$
$$\left( {{\text{ii}}} \right)MnO_4^ - + 8{H^ + } + 5{e^ - } \to $$ $$\_\_\_\_ + 4{H_2}O$$
$$\left( {{\text{iii}}} \right)MnO_4^ - + {e^ - } \to \_\_\_\_$$
A.
$$Mn{O_2},M{n^{2 + }},MnO_4^{2 - }$$
B.
$$M{n^{2 + }},Mn{O_2},MnO_4^{2 - }$$
C.
$$MnO_4^{2 - },M{n^{2 + }},Mn{O_2}$$
D.
$$Mn{O_2},MnO_4^{2 - },M{n^{2 + }}$$
Answer :
$$Mn{O_2},M{n^{2 + }},MnO_4^{2 - }$$