The hybridisation of carbon atoms in C-C single bond of
`HC-=C-CH=CH=CH_(2)`

Options

A. `sp^(3)-sp^(3)`
B. `sp^(2)-sp^(3)`
C. `sp-sp^(2)`
D. `sp^(3)-sp`

Answer

To determine the hybridization of the carbon atoms in the compound HC≡C-CH=CH-CH₂, we will analyze the structure and bonding of the carbon atoms involved in the C-C single bond.

### Step-by-Step Solution:

1. **Identify the Structure**:
The compound given is HC≡C-CH=CH-CH₂. It consists of multiple carbon atoms with different types of bonds (single, double, and triple bonds).

2. **Locate the C-C Single Bond**:
The C-C single bond in this compound is between the carbon atoms in the structure. We need to focus on the carbon atoms that are involved in the single bond.

3. **Determine the Hybridization**:
- **For the first carbon in the C-C single bond**:
- This carbon is bonded to one hydrogen atom and another carbon atom through a single bond.
- The bonding involves one sigma bond with the adjacent carbon and one sigma bond with hydrogen.
- Since it forms two sigma bonds, the hybridization of this carbon atom is **sp** (2 sigma bonds = sp).

- **For the second carbon in the C-C single bond**:
- This carbon is bonded to two other carbon atoms (one through a single bond and one through a double bond) and one hydrogen atom.
- The bonding involves one sigma bond with the adjacent carbon (single bond), one sigma bond with the carbon in the double bond, and one sigma bond with hydrogen.
- Since it forms three sigma bonds, the hybridization of this carbon atom is **sp²** (3 sigma bonds = sp²).

4. **Conclusion**:
- The hybridization of the first carbon in the C-C single bond is **sp**.
- The hybridization of the second carbon in the C-C single bond is **sp²**.

### Final Answer:
- The hybridization of the carbon atoms in the C-C single bond of HC≡C-CH=CH-CH₂ is **sp** for the first carbon and **sp²** for the second carbon.