Question -
When KMnO4 acts as an oxidising agent and ultimately forms [MnO4]−2,MnO2,Mn2O3,Mn+2 then the number of electrons transferred in each case respectively is
Options:
A .  4, 3, 1, 5
B .  1, 5, 3, 7
C .  1, 3, 4, 5
D .  3, 5, 7, 1
Answer: Option C : C This has to be answered based on the oxidation number of the central metal atom in each case. To start with Mn has +7 oxidation number in KMnO4. Likewise, we have +6MnO2−4 +4MnO2 +3Mn2O3 +2Mn2+ The number of electrons transferred in each case is 1, 3, 4, 5 respectively.
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