Which of the following halide cannot hydrolysed ?

Options

A. `C Cl_4`
B. `Si Cl_4`
C. `Ge Cl_4`
D. `Si F_4`

Answer

To determine which halide cannot hydrolyze, we will analyze each option provided. Hydrolysis refers to the reaction of a compound with water, resulting in the formation of new products.

### Step-by-Step Solution:

1. **Understand Hydrolysis**:
- Hydrolysis is the reaction of a chemical compound with water. In the context of halides, it typically involves the formation of an acid and a hydroxide or an alcohol.

2. **Analyze Each Halide**:
- **Option 1: CCl₄ (Carbon Tetrachloride)**:
- CCl₄ does not hydrolyze. The carbon atom is small and surrounded by four chlorine atoms, making it sterically hindered. Water cannot effectively attack the carbon atom. Additionally, carbon does not have empty d-orbitals to facilitate coordination with water.

- **Option 2: SiCl₄ (Silicon Tetrachloride)**:
- SiCl₄ hydrolyzes when reacted with water, producing Si(OH)₄ and HCl. Silicon has empty d-orbitals that allow it to form a coordinate bond with water, facilitating hydrolysis.

- **Option 3: GeCl₄ (Germanium Tetrachloride)**:
- GeCl₄ also hydrolyzes in the presence of water, forming Ge(OH)₄ and HCl. Similar to silicon, germanium has empty d-orbitals that enable it to react with water.

- **Option 4: SiF₄ (Silicon Tetrafluoride)**:
- SiF₄ reacts with water to produce Si(OH)₄ and HF. The presence of empty d-orbitals in silicon allows for hydrolysis to occur.

3. **Conclusion**:
- Among the options analyzed, only CCl₄ does not undergo hydrolysis. Therefore, the halide that cannot hydrolyze is **CCl₄**.

### Final Answer:
**CCl₄ (Carbon Tetrachloride) cannot hydrolyze.**