Write IUPAC name of the complex : `[CoCl_(2)(en)_(2)]^(+).`

Explanation

To write the IUPAC name of the complex \([CoCl_2(en)_2]^+\), we can follow these steps:

### Step 1: Identify the Ligands
The complex contains:
- 2 chloride ions (Cl^-)
- 2 ethylenediamine (en) ligands

### Step 2: Name the Ligands
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