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There are 3 oxides of iron: $FeO$, ${ Fe }_{ 2 }{ O }_{ 3 }$, and ${ Fe }_{ 3 }{ O }_{ 4 }$.

Which of the following is NOT a possible oxidation number of Fe?

A

0

B

+2

C

+3

D

+8/3

E

None of the above.

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