Question

The brown ring complex is formulated as [Fe(H₂O)₅NO]SO₄. The oxidation number of iron is ______.

Options

• 1

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• 3

• 0

Answer 1

The brown ring complex is formulated as [Fe(H₂O)₅NO]SO₄. The oxidation number of iron is 1.

Explanation:
[Fe(H₂O)₅NO]SO₄

Let the oxidation number of Fe be x then,

1 × (x) + 5 × (0) + 1 × (+1) + 1 × (−2) = 0

∴ x = +1