The statements regarding N, molecule are
I) The Bond energy is 945. 4 KJ/mole
II) It has triple bond
III)It contains `2sigma and 1pi` bond The correct combination is

Options

A. Only II is correct
B. I & II are correct
C. II and I are correct
D. All are correct

Answer

To solve the problem regarding the nitrogen molecule (N₂) and evaluate the correctness of the given statements, we will analyze each statement step by step.

### Step-by-Step Solution:

1. **Evaluate Statement I: Bond Energy**
- The bond energy of N₂ is given as 945.4 kJ/mole.
- This value is indeed high, indicating a strong bond.
- The bond energy is related to the bond order; a higher bond order typically correlates with a higher bond energy.
- **Conclusion**: Statement I is **True**.

2. **Evaluate Statement II: Triple Bond**
- The molecular structure of N₂ is represented as N≡N, which indicates a triple bond between the two nitrogen atoms.
- A triple bond consists of one sigma bond and two pi bonds.
- **Conclusion**: Statement II is **True**.

3. **Evaluate Statement III: Bond Composition**
- The statement claims that N₂ contains 2 sigma bonds and 1 pi bond.
- However, in a triple bond (N≡N), there is **1 sigma bond** and **2 pi bonds**.
- Therefore, the statement that it contains "2 sigma and 1 pi" is incorrect.
- **Conclusion**: Statement III is **False**.

### Final Conclusion:
- Based on the evaluations:
- Statement I: True
- Statement II: True
- Statement III: False
- The correct combination of statements is **I and II only**.

### Answer:
The correct combination is **1 and 2 are correct**.

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