In `overset(1)CH_(2)=overset(2)CH-overset(3)CH_(2)-overset(4)C-=overset(5)CH`, the `C_(2)-C_(3)` bond involves the hybridization of the type :

Options

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

Explanation

To determine the hybridization of the bond between carbon atoms C2 and C3 in the given structure, we will analyze the bonding characteristics of these carbon atoms step by step.

### Step 1: Identify the Structure
The given structure is:
\[ \overset{1}{CH_2} = \overset{2}{CH} - \overset{3}{CH_2} - \overset{4}{C} \equiv \overset{5}{CH} \]

Here, we focus on carbon atoms C2 and C3.

### Step 2: Count the Bonds
- **C2 (CH)** is involved in:
- 1 single bond with C1 (C1 is CH2)
- 1 single bond with C3 (C3 is CH2)
- 1 double bond with C4 (C4 is C)

- **C3 (CH2)** is involved in:
- 1 single bond with C2 (C2 is CH)
- 1 single bond with C4 (C4 is C)

### Step 3: Determine the Hybridization
- For **C2**:
- It forms 3 sigma bonds (1 with C1, 1 with C3, and 1 with C4) and has 1 pi bond (with C4).
- The presence of 3 sigma bonds indicates that C2 is **sp² hybridized** (3 regions of electron density).

- For **C3**:
- It forms 2 sigma bonds (1 with C2 and 1 with C4) and has no pi bonds.
- The presence of 2 sigma bonds indicates that C3 is **sp³ hybridized** (4 regions of electron density).

### Conclusion
Thus, the hybridization of the C2-C3 bond involves:
- C2: sp²
- C3: sp³

### Final Answer
The hybridization of the C2-C3 bond is **sp² for C2 and sp³ for C3**.