Write the IUPAC name of `[Cr(e n)_(2)Cl_(2)]^(+)` ion and draw the structures of its geometrical isomers.

Explanation

To solve the problem, we will break it down into two parts: writing the IUPAC name of the complex ion \([Cr(en)_2Cl_2]^+\) and drawing the structures of its geometrical isomers.

### Step 1: Identify the components of the complex ion
- The complex ion consists of chromium (Cr), ethylenediamine (en), and chloride ions (Cl).
- Ethylenediamine is a bidentate ligand, meaning it can form two bonds with the central metal ion.

### Step 2: Determine the oxidation state of chromium
- Let the oxidation state of chromium be \(x\).
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