Which of the following may be classified as an aryl halide ?

Options

A.
B.
C.
D.

Answer

To determine which of the given compounds may be classified as an aryl halide, we need to understand the definition of aryl halides. Aryl halides are compounds where a halogen atom (such as fluorine, chlorine, bromine, or iodine) is directly bonded to a carbon atom of an aromatic ring.

### Step-by-Step Solution:

1. **Identify the Compounds**: We need to examine the provided compounds to see which one has a halogen directly attached to a carbon in an aromatic ring.

2. **Analyze Each Compound**:
- **Compound 1**: This compound has a chlorine atom attached to a carbon that is bonded to a CH2 group, which in turn is attached to the benzene ring. Since the chlorine is not directly bonded to the aromatic ring, this is **not** an aryl halide.
- **Compound 2**: Similar to the first compound, this one also has a chlorine atom attached to a carbon that is bonded to a CH2 group. Thus, the chlorine is again not directly attached to the aromatic ring, making this **not** an aryl halide.
- **Compound 3**: In this compound, the chlorine atom is directly bonded to a carbon atom of the aromatic ring. Therefore, this compound qualifies as an aryl halide.
- **Compound 4**: This compound has a chlorine atom attached to a carbon that is bonded to a CH2 group, which is not directly connected to the aromatic ring. Hence, this is **not** an aryl halide.

3. **Conclusion**: The only compound that qualifies as an aryl halide is the third compound, where the halogen is directly attached to the aromatic ring.

### Final Answer:
The compound that may be classified as an aryl halide is **Compound 3**.