Gammaexane is

Options

A. Bromobenzene
B. Benzylchloride
C. Chlorobenzene
D. Benzene hexachloride

Answer

To understand what gamma-hexene is, we can break down the information provided in the video transcript step by step.

### Step-by-Step Solution:

1. **Identify the Compound**:
- Gamma-hexene is referred to as benzene hexachloride (BHC). This indicates that it is a chlorinated derivative of benzene.

2. **Understand the Reaction**:
- The formation of gamma-hexene involves an addition reaction. In this case, benzene (C6H6) reacts with chlorine (Cl2).

3. **Conditions for the Reaction**:
- The reaction occurs in the presence of ultraviolet (UV) light and at a temperature of around 500 Kelvin. This is crucial as UV light initiates the reaction.

4. **Reaction Mechanism**:
- In the reaction, chlorine molecules are added to the benzene ring. Each chlorine atom replaces a hydrogen atom on the benzene ring.
- Since benzene has six hydrogen atoms, the addition of chlorine results in the substitution of all six hydrogen atoms with chlorine atoms.

5. **Product Formation**:
- The product formed is benzene hexachloride (BHC), which can also be represented as C6H6Cl6. This indicates that there are six carbon atoms, six chlorine atoms, and the hydrogen atoms are replaced by chlorine.

6. **Structural Representation**:
- In the structural formula of benzene hexachloride, each carbon atom in the benzene ring is bonded to a chlorine atom instead of a hydrogen atom. The structure can be visualized as a hexagonal ring with chlorine atoms attached to each carbon.

7. **Conclusion**:
- Therefore, gamma-hexene is essentially benzene hexachloride (BHC), which is a fully chlorinated derivative of benzene.