`{:(,"Column I",,"Column II"),(("A"),[CoCl_(2)(en)_(2)]^(+),(p),"Shows geometrical isomerism only"),(("B"),[Cr("ox")_(3)]^(3-),(q),"Shows optical isomerism only"),(("C"),[RhCl_(3)(py)_(3)],(r),"Shows geometrical as well as optical isomerism"),(("D"),[ZnCl_(2)(NH_(3))_(2)],(s),"Shows no isomerism"):}`

Answer

To solve the problem of matching the coordination complexes from Column I with their corresponding types of isomerism from Column II, we will analyze each complex step by step.

### Step 1: Analyze Complex A - [CoCl₂(en)₂]⁺
- **Structure**: This complex has a cobalt ion coordinated with two chloride ions and two ethylenediamine (en) ligands.
- **Isomerism**: The arrangement of ligands can lead to cis and trans forms. Since there are two types of ligands, geometrical isomerism (cis-trans) is possible.
- **Conclusion**: This complex shows geometrical isomerism only.

**Hint**: Look for the presence of different ligands that can lead to cis and trans arrangements.

### Step 2: Analyze Complex B - [Cr(ox)₃]³⁻
- **Structure**: The complex consists of chromium coordinated with three oxalate (ox) ligands.
- **Isomerism**: The oxalate ligand is bidentate and symmetrical, which means that it can create a chiral environment without a plane of symmetry.
- **Conclusion**: This complex shows optical isomerism only.

**Hint**: Check for the presence of chiral centers and absence of planes of symmetry to identify optical isomerism.

### Step 3: Analyze Complex C - [RhCl₃(py)₃]
- **Structure**: This complex has rhodium coordinated with three chloride ions and three pyridine (py) ligands.
- **Isomerism**: The arrangement can lead to facial (fac) and meridional (mer) isomers. The fac isomer can be optically active due to the absence of a plane of symmetry.
- **Conclusion**: This complex shows both geometrical and optical isomerism.

**Hint**: Identify if the complex can have facial and meridional arrangements and check for optical activity.

### Step 4: Analyze Complex D - [ZnCl₂(NH₃)₂]
- **Structure**: This complex has zinc coordinated with two chloride ions and two ammonia (NH₃) ligands.
- **Isomerism**: The coordination geometry is tetrahedral, which does not allow for cis-trans isomerism. Additionally, there is a plane of symmetry, meaning it cannot show optical isomerism either.
- **Conclusion**: This complex shows no isomerism.

**Hint**: Consider the coordination geometry and symmetry to determine if isomerism is possible.

### Final Matching:
- A → p (Shows geometrical isomerism only)
- B → q (Shows optical isomerism only)
- C → r (Shows geometrical as well as optical isomerism)
- D → s (Shows no isomerism)

### Summary of Answers:
- A: p
- B: q
- C: r
- D: s