How many electrons required to received by oxidising agent KMnO_(4) to converted into MnO_(4)^(-2),MnO_(2),Mn_(2)O_(3)andMn^(+2) ?

How many electrons required to received by oxidising agent KMnO_(4) to

1.	How many electrons required to received by oxidising agent KMnO_(4) to converted into MnO_(4)^(-2),MnO_(2),Mn_(2)O_(3)andMn^(+2) ?
Answer» 4, 3, 1, 5 1, 5, 3, 7 1, 3, 4, 5 3, 5, 7, 1 Solution :`KMnO_(4)OVERSET(+1E^(-))to(MnO_(4))^(-2)" "[Mn(+6)]` `KMnO_(4)overset(+3E^(-))toMnO_(2)" "[Mn(+4)]` `KMnO_(4)overset(+4e^(-))to1/2Mn_(2)O_(3)" "[Mn(+3)]` `KMnO_(4)overset(+5e^(-))toMn^(+2)" "[Mn(+2)]`