Question

Assign the oxidation number to MN in K2 MnO4

Answer 1

2(1)+X+4(-2)=0

2+X-8=0

X-6=0

X=6

oxidation number of Mn is +6

Answer 2

The oxidation state of manganese (Mn) is +6.

Explanation:

Oxidation state is defined as the number which is given to an atom when it looses or gains electron.

If the element gains electron, it will attain a negative oxidation state and if the element looses electrons, it will attain a positive oxidation state.

In $K_2MnO_4$ , let the oxidation state of manganese be x

Oxidation state of oxygen  = -2

Oxidation state of potassium= +1

Evaluating the oxidation state of Mn:

$(+1)2+x+(-2)4=0\\\\x=+6$

Hence, the oxidation state of manganese is +6.

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