Which of the following will not have any stereoisomer?

Options

A.
B.
C.
D.

Explanation

To determine which of the given compounds will not have any stereoisomers, we need to analyze the presence of stereogenic centers and the possibility of geometric isomerism. Here’s a step-by-step solution:

### Step 1: Understand Stereoisomerism
Stereoisomers are compounds that have the same molecular formula and connectivity of atoms but differ in the spatial arrangement of those atoms. There are two main types of stereoisomerism:
- **Geometric isomerism** (cis-trans isomerism) typically occurs in compounds with double bonds or in cyclic structures.
- **Optical isomerism** occurs when a molecule has a chiral center (a carbon atom attached to four different groups).

### Step 2: Identify Stereogenic Centers
A stereogenic center (or chiral center) is usually a carbon atom bonded to four different substituents. If a compound has no stereogenic centers, it cannot exhibit optical isomerism.

### Step 3: Check for Symmetry
If a molecule has a plane of symmetry or a center of symmetry, it is considered achiral and will not have optical isomers.

### Step 4: Analyze the Given Options
- **Option A**: If it has two identical substituents on a double bond or a carbon atom, it cannot have geometric isomers.
- **Option B**: If it has four different substituents, it can have stereoisomers.
- **Option C**: If it has a plane of symmetry, it will not have stereoisomers.
- **Option D**: If it has two identical substituents, it will not have stereoisomers.

### Step 5: Conclusion
From the analysis, the compound that has identical substituents or a plane of symmetry will not have any stereoisomers.

### Final Answer
The compound with identical substituents or a plane of symmetry will not have any stereoisomers.

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