The bond having the highest bond energy is :

Options

A. C = C
B. C = S
C. C = O
D. P = N

Answer

To determine which bond has the highest bond energy among the given options, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Bond Energy**: Bond energy refers to the amount of energy required to break a bond between two atoms. Generally, stronger bonds have higher bond energies.

2. **Identify Electronegativity**: The bond energy is influenced by the electronegativity of the atoms involved. More electronegative atoms tend to form stronger bonds due to a greater attraction for the shared electrons.

3. **Consider Atomic Size**: Smaller atoms can form stronger bonds because their orbitals can overlap more effectively. This results in a stronger attraction between the nuclei of the bonded atoms.

4. **Analyze Given Bonds**: Without specific bonds listed, we can consider common examples:
- C-H bond
- C-C bond
- C=O bond (Carbon double bond with Oxygen)
- O-H bond

5. **Compare Bond Energies**:
- The C=O double bond is known to have a very high bond energy due to the high electronegativity of oxygen and the effective overlap of orbitals.
- C-H and C-C bonds are generally weaker compared to C=O bonds.
- O-H bonds, while strong, do not surpass the bond energy of C=O.

6. **Conclusion**: Based on the above analysis, the C=O bond (specifically in carbonyl compounds) exhibits the highest bond energy among the typical bonds considered.

### Final Answer:
The bond having the highest bond energy is **C=O (Carbon double bond with Oxygen)**.