`sigma_(C-C):4,sigma_(C-H):6,pi_(C=C):1,pi_(C=C):2.` These numbers of`sigma` and `pi` bonds are present in which of the following molecule? Choose the correct option.

Options

A. `CH-=C-CH=CH-CH_3`
B. `CH_2=C=CH-CH_3`
C. `CH_2=CH-CH=CH-CH_3`
D. None of the above

Answer

To solve the problem, we need to analyze the given information about the number of sigma (σ) and pi (π) bonds in a molecule.

### Step-by-Step Solution:

1. **Identify the Given Bonds**:
- We have:
- σ (C-C) = 4
- σ (C-H) = 6
- π (C=C) = 1
- π (C=C) = 2

2. **Understanding Sigma and Pi Bonds**:
- A sigma bond (σ) is formed by the head-on overlap of atomic orbitals. Each single bond is a sigma bond.
- A pi bond (π) is formed by the side-to-side overlap of p-orbitals and is present in double and triple bonds. A double bond consists of one sigma and one pi bond, while a triple bond consists of one sigma and two pi bonds.

3. **Count the Total Bonds**:
- From the information given:
- The total number of C-C bonds (σ) is 4.
- The total number of C-H bonds (σ) is 6.
- The total number of π bonds is 3 (1 from one double bond and 2 from another double bond).

4. **Constructing the Molecule**:
- To satisfy 4 σ (C-C) bonds, we can have a combination of single and double bonds.
- To satisfy 6 σ (C-H) bonds, we can have multiple carbon atoms, each bonded to hydrogen.
- The total number of π bonds indicates that there are at least two double bonds.

5. **Possible Structure**:
- A possible structure could be a chain of carbon atoms with some double bonds and sufficient hydrogen atoms to satisfy the σ (C-H) bonds.
- For example, a molecule like 1,3-butadiene (C4H6) has:
- 4 σ (C-C) bonds (3 single bonds, 1 double bond)
- 6 σ (C-H) bonds (each carbon bonded to sufficient hydrogen)
- 2 π bonds from the two double bonds.

6. **Conclusion**:
- Based on the analysis, the molecule that fits the criteria of having 4 σ (C-C) bonds, 6 σ (C-H) bonds, and 3 π bonds is likely to be a compound with multiple double bonds and a sufficient number of hydrogen atoms.

### Answer:
The correct option is the molecule that has 4 σ (C-C) bonds, 6 σ (C-H) bonds, and 3 π bonds, which corresponds to a structure like 1,3-butadiene or a similar compound.