Derive the geometry of the complex compound corresponding to the brown ring in nitrate test Predict the magnetic moment of the complex .

Explanation

To derive the geometry of the complex compound corresponding to the brown ring in the nitrate test and predict its magnetic moment, we will follow these steps:

### Step 1: Identify the Complex
The brown ring formed in the nitrate test is due to the formation of a complex with iron (Fe) and nitrosonium ion (NO⁺). The complex can be represented as [Fe(H₂O)₅NO]²⁺.

### Step 2: Determine the Oxidation State of Iron
In this complex, iron is in the +1 oxidation state. This can be derived from the overall charge of the complex and the known charge of the nitrosonium ion (NO⁺).

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