Write IUPAC name of `[Co(NH_3)_5ONO]Cl_2`.

Explanation

To write the IUPAC name of the coordination compound `[Co(NH₃)₅ONO]Cl₂`, we will follow these steps:

### Step 1: Identify the components of the coordination compound
The compound consists of a central metal ion (cobalt, Co), a number of ligands (five ammonia molecules, NH₃, and one nitrito ligand, ONO), and two chloride ions (Cl⁻) as counter ions.

### Step 2: Determine the oxidation state of the central metal ion
Let the oxidation state of cobalt be \( x \).
- Ammonia (NH₃) is a neutral ligand, contributing 0 to the charge.
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