Which of the following statement about anhydrous aluminium chloride is correct

Options

A. It exists as `AlCl_(3)` molecules
B. It is not easily hydrolysed
C. It sublimes at `100^(@)C` under vacuum
D. It is strong lewis base

Explanation

To determine which statement about anhydrous aluminium chloride (AlCl3) is correct, we will analyze each statement provided in the video transcript step by step.

### Step 1: Analyze the first statement
**Statement:** Anhydrous AlCl3 exists as AlCl3 molecule.

**Analysis:** Anhydrous aluminium chloride does exist as discrete AlCl3 molecules in the gas phase, but in the solid state, it forms a polymeric structure. Therefore, this statement is somewhat misleading as it does not accurately represent the solid-state structure.

### Step 2: Analyze the second statement
**Statement:** Anhydrous AlCl3 is of yellow color.

**Analysis:** Anhydrous aluminium chloride is typically white or colorless. The yellow color is not characteristic of pure anhydrous AlCl3. Thus, this statement is incorrect.

### Step 3: Analyze the third statement
**Statement:** Anhydrous AlCl3 is not easily hydrolyzed.

**Analysis:** Anhydrous AlCl3 is actually quite reactive with water and can hydrolyze readily to form aluminium hydroxide and hydrochloric acid. Therefore, this statement is also incorrect.

### Step 4: Analyze the fourth statement
**Statement:** Anhydrous AlCl3 sublimates at 100 degrees Celsius under vacuum.

**Analysis:** Anhydrous AlCl3 sublimates at approximately 178 degrees Celsius under vacuum, not at 100 degrees Celsius. Thus, this statement is incorrect.

### Step 5: Analyze the fifth statement
**Statement:** Anhydrous AlCl3 is a strong Lewis base.

**Analysis:** Anhydrous AlCl3 actually acts as a Lewis acid rather than a Lewis base. It can accept electron pairs, which is characteristic of Lewis acids. Therefore, this statement is also incorrect.

### Conclusion
After analyzing all the statements, it appears that none of the statements provided about anhydrous aluminium chloride are correct.