Statement-1: `NCl_(3)` is hydrolysed by water by `NF_(3)` is not hydrolysed.
Statement-2: N does not has vacant orbital for expansion of octet.

Options

A. Statement-1 is true, statement-2 is true, statement-2 is a correct explanation for statement-1
B. Statement-1 is true, statement-2 is true, statement-2 is not correct explanation for statement-1
C. Statement-1 is true, statement-2 is false
D. Statement-1 is false, statement-2 is true

Answer

To analyze the given statements, let's break down the reasoning step by step.

### Step 1: Understanding Hydrolysis of NCl₃
- **NCl₃ (Nitrogen Trichloride)** can undergo hydrolysis when it reacts with water. The reaction can be represented as:
\[ NCl₃ + 3H₂O \rightarrow NH₃ + 3HOCl \]
- In this reaction, water acts as a nucleophile, donating a lone pair of electrons to the nitrogen atom in NCl₃, allowing it to form ammonia (NH₃) and hypochlorous acid (HOCl).

### Step 2: Role of Chlorine's Orbitals
- Chlorine (Cl) has an electronic configuration of \(1s^2 2s^2 2p^6 3s^2 3p^5\).
- The presence of empty 3d orbitals in chlorine allows it to accept electron pairs from water, facilitating the hydrolysis process.

### Step 3: Understanding NF₃
- **NF₃ (Nitrogen Trifluoride)** does not undergo hydrolysis. The electronic configuration of nitrogen is \(1s^2 2s^2 2p^3\), which means it does not have vacant orbitals for expansion of its octet.
- Additionally, fluorine (F) has an electronic configuration of \(1s^2 2s^2 2p^5\), which also lacks empty orbitals.

### Step 4: Conclusion on Hydrolysis
- Since NF₃ does not have vacant orbitals to accept electrons from water, it cannot undergo hydrolysis. Therefore, the statement that NCl₃ is hydrolyzed by water while NF₃ is not is correct.

### Step 5: Evaluating Statement 2
- Statement 2 claims that nitrogen does not have vacant orbitals for the expansion of its octet. This is true, as nitrogen lacks the 3d orbitals that would allow for such expansion.
- However, while this statement is true, it does not directly explain why NCl₃ is hydrolyzed and NF₃ is not. The reason for the hydrolysis is more about the ability to accept electrons rather than the expansion of the octet.

### Final Conclusion
- Both statements are correct, but Statement 2 does not correctly explain Statement 1. Therefore, the answer is that both statements are true, but Statement 2 does not provide the correct explanation for Statement 1.

### Answer:
B. Both statements are correct, but Statement 2 does not correctly explain Statement 1.

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