Different types of bond are formed in the chemical compound.
These bond have different strength and bond energies
associated with them. These bond are formed with atoms in
different environments.
Which of the following bond has highest bond energy ?

Options

A. `sigma`-bond
B. `pi`-bond
C. Hydrogen bond
D. None of these

Answer

To determine which type of bond has the highest bond energy among sigma bonds, pi bonds, and hydrogen bonds, we can follow these steps:

### Step 1: Understand Bond Types
- **Sigma Bonds (σ)**: These are formed by the head-on overlapping of atomic orbitals. They have a strong bond due to the direct overlap along the internuclear axis.
- **Pi Bonds (π)**: These are formed by the sideways overlap of p-orbitals. They are generally weaker than sigma bonds due to less effective overlap.
- **Hydrogen Bonds**: These are not true bonds but rather strong dipole-dipole interactions that occur between molecules containing hydrogen bonded to highly electronegative atoms (like O, N, or F). They are weaker than both sigma and pi bonds.

### Step 2: Compare Bond Energies
- **Bond Energy Definition**: Bond energy is the amount of energy required to break one mole of a bond of a particular type.
- **Strength Comparison**:
- Sigma bonds have the highest bond energy due to their strong head-on overlap.
- Pi bonds have lower bond energy than sigma bonds because of their weaker sideways overlap.
- Hydrogen bonds have the lowest bond energy compared to both sigma and pi bonds.

### Step 3: Conclusion
Based on the comparison of bond strengths and energies:
- **Answer**: The bond with the highest bond energy is the **sigma bond**.