In the Brown Ring test for the nitrate () ion, a brown complex is formed. The chemical formula and the formal oxidation state of Iron in this complex are:

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Question

In the Brown Ring test for the nitrate ($NO_3^-$) ion, a brown complex is formed. The chemical formula and the formal oxidation state of Iron in this complex are:

Prashant Kotian · Accepted Answer

Correct answer: A. The brown ring complex is . The nitrosyl ligand acts as , making the formal oxidation state of the central Iron atom .

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