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The brown ring complex compound of iron ...

The brown ring complex compound of iron is formulated as `[Fe (H_(2)O)_(5) (NO)] SO_(4)`. The oxidation state of iron is

A

`+1`

B

`+2`

C

`+3`

D

zero

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The correct Answer is:
B
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  10. When SO(2) is passed through acidic solution of potassium dichromate, ...

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  12. Oxidation number of fluorine in F(2)O is:

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