Which of the following bonds has the highest bond energy?

Options

A. C - C
B. C`equiv`C
C. C = C
D. C - H

Answer

To determine which bond has the highest bond energy among the given options, we will analyze the bond types based on their bond orders and stability.

### Step-by-Step Solution:

1. **Understanding Bond Energy**:
- Bond energy is the amount of energy required to break a chemical bond. The higher the bond energy, the stronger the bond and the more stable the molecule.

2. **Identifying the Bonds**:
- We have four types of bonds to analyze:
- C-C (single bond)
- C≡C (triple bond)
- C=C (double bond)
- C-H (single bond)

3. **Determining Bond Order**:
- Bond order is a measure of the number of bonds between two atoms. It can be calculated as follows:
- Single bond (C-C): Bond order = 1
- Double bond (C=C): Bond order = 2
- Triple bond (C≡C): Bond order = 3
- Single bond (C-H): Bond order = 1

4. **Comparing Bond Orders**:
- The bond order indicates the stability of the bond. The higher the bond order, the stronger the bond:
- C-C: Bond order = 1 (least stable)
- C=C: Bond order = 2 (more stable than C-C)
- C≡C: Bond order = 3 (most stable)
- C-H: Bond order = 1 (same as C-C)

5. **Conclusion**:
- Among the bonds analyzed, the C≡C (triple bond) has the highest bond order (3), indicating it is the strongest and has the highest bond energy.

### Final Answer:
The bond with the highest bond energy is **C≡C (triple bond)**.

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