Which of the following complexes has more `Delta_O` vlaue and why? (i) `Fe(H_2O)_6]^(3+)` and (ii) `[Fe(CN)_6]^(3-)`.
Also find the number of unpared electrons in them.

Explanation

To determine which of the complexes has a higher splitting energy value (Δ_O) and the number of unpaired electrons in each, we will analyze the two complexes step by step.

### Step 1: Identify the oxidation state of Iron in both complexes

1. **For [Fe(H2O)6]^(3+)**:
- Let the oxidation state of Fe be \( x \).
- The overall charge of the complex is +3.
- The charge of water (H2O) is 0, and there are 6 water molecules.
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