Question

Determine the oxidation number of marked element with solution.
1 ] Na'B'H4
2] K2MnO4​

Answer 1

Answer:

Let x e the oxidation number of Mn in

k2 MnO 4

We know that the oxidation no. of K=+1 and O=−2.

So, 2(+1)+X+4(−2)=0

2+X−8=0

X=+6

Hence, the oxidation no. of Mn is +6.

Answer 2

Answer:

Let x e the oxidation number of Mn in K2MnO4

We know that the oxidation no. of K=+1 and O=−2.

So, 2(+1)+X+4(−2)=0

2+X−8=0

X=+6

Hence, the oxidation no. of Mn is +6.

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