Find the oxidation number of Fe in `[Fe(H_2O)_6]^(3+)`

Explanation

To find the oxidation number of iron (Fe) in the complex ion \([Fe(H_2O)_6]^{3+}\), we can follow these steps:

### Step 1: Identify the components of the complex
The complex consists of one iron ion (Fe) and six water molecules (H₂O) as ligands.

### Step 2: Assign oxidation states
- The oxidation state of water (H₂O) is neutral, meaning it has an oxidation state of 0.
- Since there are six water molecules, their total contribution to the charge is \(6 \times 0 = 0\).
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