In the compound `HC-=C-CH_(2)-CH=CH-CH_(3)`, the `C_(2)-C_(3)` bond is the type of :-

Options

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

Answer

To determine the type of bond between C2 and C3 in the compound `HC≡C-CH₂-CH=CH-CH₃`, we will analyze the structure and hybridization of the involved carbon atoms.

### Step-by-Step Solution:

**Step 1: Identify the structure of the compound.**
- The compound can be represented as follows:
```
H-C≡C-CH₂-CH=CH-CH₃
```
- Here, we can see that there are both a triple bond (between C1 and C2) and a double bond (between C4 and C5).

**Step 2: Number the carbon atoms.**
- We will number the carbon atoms starting from the end closest to the first double or triple bond:
- C1: H
- C2: C (triple bond)
- C3: C (single bond, CH₂)
- C4: C (double bond)
- C5: C
- C6: C (CH₃)

**Step 3: Determine the type of bond between C2 and C3.**
- The bond between C2 and C3 is a single bond because:
- C2 is involved in a triple bond with C1 (C≡C), which consists of one sigma bond and two pi bonds.
- C3 is bonded to C2 with a single bond (C-C), which is a sigma bond.

**Step 4: Identify the hybridization of C2 and C3.**
- For C2:
- C2 is part of the triple bond (C≡C), which has sp hybridization. This means it has two pi bonds and one sigma bond.

- For C3:
- C3 is bonded to C2 with a single bond and has two other hydrogen atoms attached (CH₂), indicating sp³ hybridization. This means it has four sigma bonds.

**Step 5: Conclude the type of bond between C2 and C3.**
- The bond between C2 and C3 is a **sigma bond** (C-C), as it is a single bond.

### Final Answer:
The bond between C2 and C3 is a **single bond (sigma bond)**.