In which of the following compounds hydrolysis tkes plcae through `S_(N^(1)) and S_(N^(2))` mechanism respectively?

Options

A. `NF_(3),NCl_(3)`
B. `P_(4)O_(10),SiCl_(4)`
C. `SF_(4),TeF_(6)`
D. `SiCl_(6),SiF_(4)`

Explanation

To determine which compounds undergo hydrolysis through SN1 and SN2 mechanisms respectively, let's analyze the compounds mentioned in the video transcript.

### Step-by-Step Solution:

1. **Identify the Compounds**: The compounds mentioned in the transcript are NF3 and NCl3. We need to analyze their hydrolysis mechanisms.

2. **SN1 Mechanism for NF3**:
- **Reaction**: NF3 reacts with water to produce nitrogen oxides and hydrofluoric acid.
- **Mechanism**:
- The NF bond in NF3 undergoes cleavage to form a cation (NF2+) and a fluoride ion (F-).
- The cation (NF2+) is stabilized by the formation of a bond with water, leading to the formation of hydroxylated products.
- This process occurs in multiple steps, characteristic of the SN1 mechanism where the formation of the intermediate cation is a key feature.

3. **SN2 Mechanism for NCl3**:
- **Reaction**: NCl3 reacts with water to produce ammonia (NH3) and hypochlorous acid (HOCl).
- **Mechanism**:
- The water molecule attacks the nitrogen center of NCl3, leading to the simultaneous displacement of a chloride ion (Cl-).
- This is a one-step process where the nucleophile (water) and the leaving group (Cl-) interact simultaneously, characteristic of the SN2 mechanism.
- After two such attacks, all three Cl atoms are replaced, resulting in the formation of NH3 and HOCl.

4. **Conclusion**:
- The hydrolysis of NF3 occurs via the SN1 mechanism.
- The hydrolysis of NCl3 occurs via the SN2 mechanism.

### Final Answer:
- The compounds that undergo hydrolysis through SN1 and SN2 mechanisms respectively are **NF3 (SN1)** and **NCl3 (SN2)**.