6. the oxidation number of mn in kmno4 is
a) +8. b) +7. c) +5. d) -7.
e) -8.

The oxidation number of Mn in  is +7.

Explanation:

In a compound  the sum of the oxidation states of all the atoms will be to equal the total charge on the ions.

is neutral hence its total charge is zero

Oxidation number of  potassium+ Oxidation number of Manganese+Oxidation number of  Oxygen=0

We Know that

Oxidation number of  potassium= +1

Oxidation number of  Oxygen=  -2

 Substituting the values,

(+1)+ Oxidation number of  Manganese+ 4(-2)=0

(+1)+ Oxidation number of  Manganese+ (-8)=0

(-7)+ Oxidation number of  Manganese=0

Oxidation number of  Manganese= +7

wher is the rest of the question

answerambulatory;