Which of the following will be able to show geometrical isomerism

Options

A. MABCD –Square planar
B. `MA_(3)` B – Square planar
C. MABCD–Tetrahedral
D. `MA_(2)B_(2)`–Tetrahedral

Explanation

To determine which of the given compounds can exhibit geometrical isomerism, we need to analyze the structure of each compound based on the criteria for geometrical isomerism, which typically involves the presence of a double bond or a coordination complex with different ligands.

### Step-by-Step Solution:

1. **Identify the Compounds**: We need to look at the given options and identify their structures. The options are likely coordination complexes or alkenes that can show geometrical isomerism.

2. **Criteria for Geometrical Isomerism**:
- For alkenes, geometrical isomerism occurs when there are two different groups attached to each carbon of the double bond (cis/trans isomerism).
- For coordination compounds, geometrical isomerism can occur in square planar and octahedral complexes, particularly when there are different ligands.

3. **Analyze Each Option**:
- **Option 1 (MABCD)**: This is a square planar complex with different ligands (A, B, C, D). It can show geometrical isomerism due to the arrangement of the ligands around the central metal atom. It can form multiple isomers (e.g., cis and trans).
- **Option 2 (MA3B)**: This complex has three identical ligands (A) and one different ligand (B). It cannot show geometrical isomerism because it lacks the necessary different groups on the same plane to create distinct isomers.
- **Option 3 (Tetrahedral complexes)**: Tetrahedral complexes generally do not exhibit geometrical isomerism as they do not have a plane of symmetry that allows for cis/trans arrangements.
- **Option 4 (Other options)**: Without specific details, we can assume they follow similar reasoning as above.

4. **Conclusion**: The only compound that can show geometrical isomerism is the square planar complex MABCD, as it has the necessary arrangement of different ligands.

### Final Answer:
The compound that will be able to show geometrical isomerism is **MABCD (square planar)**.