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In which of the following compounds iron...

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

A

`Fe(CO)_(5)`

B

`Fe_(2)O`

C

`K_(4)[Fe(CN)_(6)]`

D

`FeSO_(4)(NH_(4))_(2)SO_(4).6H_(2)O`

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BRILLIANT PUBLICATION-D & F BLOCK ELEMENTS-Level -II
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