Give the IUPAC names of the following compound `[CoCl_2(en)_2]_2SO_4`

Explanation

To derive the IUPAC name of the coordination compound \([CoCl_2(en)_2]_2SO_4\), we will follow a systematic approach. Here’s the step-by-step solution:

### Step 1: Identify the Components of the Compound
The compound consists of a coordination complex \([CoCl_2(en)_2]^{2+}\) and a sulfate ion \(SO_4^{2-}\). The coordination complex contains cobalt (Co) as the central metal atom, two chloride ions (Cl) as ligands, and two ethylenediamine (en) ligands.

### Step 2: Determine the Oxidation State of the Central Metal
To find the oxidation state of cobalt (Co) in the complex:
- Let the oxidation state of Co be \(x\).
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