Bond length and bond energy order is same for :

Options

A. `C-CgtSi-SigtGe-Ge`
B. `N-NgtO-OgtF-F`
C. `C-NgtC-OgtC-F`
D. `F_(2)gtCl_(2)gtBr_(2)gtI_(2)`

Answer

To solve the question regarding the bond length and bond energy order for different diatomic molecules, we will analyze the bond characteristics of nitrogen (N2), oxygen (O2), and fluorine (F2).

### Step-by-Step Solution:

1. **Understanding Bond Length and Bond Energy**:
- Bond length is the distance between the nuclei of two bonded atoms. Generally, as the bond order increases (single < double < triple), the bond length decreases.
- Bond energy is the amount of energy required to break a bond between two atoms. Higher bond order corresponds to higher bond energy.

2. **Analyzing the Given Molecules**:
- We need to compare the bond lengths and bond energies of N2, O2, and F2.
- **N2 (Nitrogen-Nitrogen)**: N2 has a triple bond.
- **O2 (Oxygen-Oxygen)**: O2 has a double bond.
- **F2 (Fluorine-Fluorine)**: F2 has a single bond.

3. **Determining Bond Length Order**:
- As we move from N2 to O2 to F2, the bond length increases because:
- N2 (triple bond) has the shortest bond length.
- O2 (double bond) has a longer bond length than N2.
- F2 (single bond) has the longest bond length.
- Therefore, the order of bond length is: **N2 < O2 < F2**.

4. **Determining Bond Energy Order**:
- The bond energy decreases as we move from N2 to O2 to F2 because:
- N2 has the highest bond energy due to the strong triple bond.
- O2 has a lower bond energy due to the double bond.
- F2 has the lowest bond energy due to the single bond.
- Therefore, the order of bond energy is: **N2 > O2 > F2**.

5. **Conclusion**:
- Since both bond length and bond energy orders for N2, O2, and F2 are consistent with each other, we conclude that the bond length and bond energy order is the same for these molecules.

### Final Answer:
The bond length and bond energy order is the same for **N2, O2, and F2**.