Nitrogen molecule is chemically less active because of its

Options

A. Small dissociation enegry
B. High dissociation energy
C. High electronegativity
D. Stable electronic configuration

Answer

To determine why the nitrogen molecule (N₂) is chemically less active, we need to analyze the properties of the nitrogen molecule and the options provided.

### Step-by-Step Solution:

1. **Understanding the Structure of Nitrogen Molecule**:
- The nitrogen molecule exists in a diatomic form as N₂.
- It contains a triple bond between the two nitrogen atoms.

2. **Bond Characteristics**:
- A triple bond consists of one sigma bond and two pi bonds, making it a very strong bond.
- The strength of this bond is characterized by its bond dissociation energy, which is the energy required to break the bond.

3. **Evaluating the Options**:
- **Option 1: Small dissociation energy**: This is incorrect because a small dissociation energy would imply that the bond is weak and easily broken, leading to higher reactivity.
- **Option 2: High dissociation energy**: This is correct. The high bond dissociation energy indicates that a large amount of energy is needed to break the N≡N bond, making the nitrogen molecule less reactive.
- **Option 3: High electronegativity**: While nitrogen does have high electronegativity, this does not directly contribute to its inertness. Electronegativity relates to the ability to attract electrons, not the reactivity of the molecule.
- **Option 4: Stable electronic configuration**: Nitrogen has a stable electronic configuration (1s² 2s² 2p³), but this stability does not account for its low reactivity.

4. **Conclusion**:
- The primary reason for the chemical inactivity of the nitrogen molecule is its **high dissociation energy** due to the strong triple bond, which requires significant energy to break.

### Final Answer:
The nitrogen molecule is chemically less active because of its **high dissociation energy**.