In which of the following, iron is present in its lowest oxidation state?

F e S O_{4} .7 H_{2} O

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F e (C O)_{5}

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F e_{0.94} O

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F e_{3} O_{4}

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Solution

The correct option is A $F e (C O)_{5}$
The oxidation state of iron in iron pentacarbonyl is $0$ . In all other compounds, iron has positive oxidation state. Thus, $F e (C O)_{5}$ has lowest oxidation state of iron.

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Similar questions

In which of the following compounds iron has the lowest oxidation state?

F e_{0.94} O

[F e (C O)_{5}]

({F e}_{0.94} O)

{F e}^{2 +}

{F e}^{3 +}

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