Write the IUPAC name of complex: `[Fe(en)_(2)Cl_(2)]Cl` and mention the oxidation of iron.

Explanation

To find the IUPAC name of the complex \([Fe(en)_{2}Cl_{2}]Cl\) and determine the oxidation state of iron, we can follow these steps:

### Step 1: Identify the Components of the Complex
The complex consists of:
- Central metal ion: Iron (Fe)
- Ligands: Ethylene diamine (en) and chloride (Cl)
- An additional chloride ion outside the coordination sphere.

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