Name the following compounds according to IUPAC system
i) `[Co(NH_(3))_(4)(H_(2)O)_(2)]Cl_(2)`
ii) `[CrCl_(2)(en)_(2)]Cl`

Explanation

To name the given coordination compounds according to the IUPAC system, we will follow a systematic approach. Let's break down the naming process for each compound step by step.

### i) Naming the compound `[Co(NH₃)₄(H₂O)₂]Cl₂`

**Step 1: Identify the ligands and their quantities**
- The ligands present are:
- Ammonia (NH₃) - 4 ligands
- Water (H₂O) - 2 ligands
...