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, we need to analyze the types of bonds presented in the question. Let's break this down step by step:

### Step 1: Understand Bond Energy
Bond energy is defined as the amount of energy required to break a bond between two atoms in a molecule. Generally, the stronger the bond, the higher the bond energy.

### Step 2: Identify the Types of Bonds
In the question, we have the following types of bonds:
1. C-C single bond (C-C)
2. C=C double bond (C=C)
3. C≡C triple bond (C≡C)

### Step 3: Analyze Each Bond Type
- **Single Bonds (C-C)**: A single bond consists of one sigma (σ) bond. It is the weakest type of bond among the three.
- **Double Bonds (C=C)**: A double bond consists of one sigma (σ) bond and one pi (π) bond. It is stronger than a single bond but weaker than a triple bond.
- **Triple Bonds (C≡C)**: A triple bond consists of one sigma (σ) bond and two pi (π) bonds. It is the strongest type of bond among the three.

### Step 4: Compare Bond Energies
- The bond energy generally increases from single to double to triple bonds:
- C-C single bond has the lowest bond energy.
- C=C double bond has a higher bond energy than the single bond.
- C≡C triple bond has the highest bond energy.

### Step 5: Conclusion
Based on the analysis, the bond with the highest bond energy is the **C≡C triple bond**.

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

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