Benzylidene chloride is

Options

A. `C_(6)H_(5)CH_(2)Cl`
B. `C_(6)H_(5)CHCl_(2)`
C. `C_(6)H_(4)ClCH_(2)Cl`
D. `C_(6)H_(5)C Cl_(3)`

Answer

To determine which compound is benzylidene chloride, we need to analyze the structures of the given options. Benzylidene chloride is characterized by a benzene ring attached to a carbon that has two chlorine atoms in a geminal position (on the same carbon).

### Step-by-Step Solution:

1. **Identify the Structure of Benzylidene Chloride:**
- Benzylidene chloride has the general structure where a benzene ring (C6H5) is attached to a carbon that has two chlorine atoms (Cl) attached to it. This carbon is also connected to another carbon (which can be a part of a double bond or a single bond).

2. **Analyze Each Option:**
- **Option 1: C6H5CH2Cl**
- This structure represents benzyl chloride, not benzylidene chloride. It has a benzene ring attached to a CH2 group, which has one chlorine atom. This is incorrect.

- **Option 2: C6H5CCl2**
- This structure shows a benzene ring attached to a carbon that has two chlorine atoms (Cl) attached to it. This matches the definition of benzylidene chloride, as the two chlorines are in a geminal position. This is the correct answer.

- **Option 3: C6H4ClCH2Cl**
- This structure shows a benzene ring with one chlorine atom on one carbon and a CH2Cl group attached to another carbon. This does not fit the definition of benzylidene chloride. Hence, this option is incorrect.

- **Option 4: C6H5CCl3**
- This structure shows a benzene ring attached to a carbon that has three chlorine atoms. This compound is known as benzo trichloride and does not match the definition of benzylidene chloride. Thus, this option is also incorrect.

3. **Conclusion:**
- The only option that correctly represents benzylidene chloride is **Option 2** (C6H5CCl2).

### Final Answer:
**Option 2 is benzylidene chloride.**

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