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 two types of ligands:
- Chloride ions (Cl), which are called "chloro."
- Ethane-1,2-diamine (en), which is a bidentate ligand.

### Step 2: Name the ligands
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