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Question: > The average oxidation state of Fe in Fe3O4 is :...

The average oxidation state of Fe in Fe3O4 is :

A

2 and 3

B

8/3

C

2

D

3

Answer

8/3

Explanation

Solution

(2)

Fe3O4 can be written as FeO.Fe2O3.

In FeO , Fe has oxidation state + 2 , in Fe2O3 has oxidation state + 3.

resultant oxidation number =1×2+2×33=83= \frac{1 \times 2 + 2 \times 3}{3} = \frac{8}{3}