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Question
Write oxidation number of iron in [Fe(CO)5]
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Solution
The charge on complex [Fe(CO)5] is 0.
∴ (O.S. of Fe + charge on ligands) = 0
∴ (O.S. of Fe + 5 × charge of CO) = 0
∴ (O.S. of Fe + 5 × 0) = 0
∴ O.S. of Fe = 0
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