Name the following complex using IUPAC norms: `[Co(en)_2(ONO) Cl]Cl`

Explanation

To name the complex `[Co(en)₂(ONO)Cl]Cl` using IUPAC nomenclature, we will follow these steps:

### Step 1: Identify the components of the complex
The complex consists of:
- Cobalt (Co) as the central metal atom.
- Ethylenediamine (en) as a neutral bidentate ligand.
- Nitrito (ONO) as a monodentate ligand.
- Chloride (Cl) as an anionic ligand.
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