Q. The brown - ring complex compound of iron is formulated as [Fe(H₂O)₅(NO)]SO₄. The oxidation state of iron is :

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A

1

B

2

C

3

D

0

Solution:

[Fe(H₂O)₅NO]SO₄,
x + 0(5) + 1(1) + 1(-2) = 0
$∴ \, \, $ x = +1.
Fe in +1 oxidation state. H₂O is neutral ligand. NO⁺ is in +1 oxidation state.

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