Statement-1: Aluminium chloride has chloro-bridged structure in vapour phase.
Statement-2: Aluminium chloride in acidified aqueous solution forms `[Al(H_(2)O)_(6)]^(3+)`

Options

A. (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 about aluminium chloride, we will break down each statement step by step.

### Step 1: Analyze Statement 1
**Statement 1:** Aluminium chloride has a chloro-bridged structure in the vapor phase.

1. **Identify the Compound:** Aluminium chloride is represented as AlCl₃.
2. **Understanding Structure:** In its solid state, AlCl₃ has a polymeric structure, but in the vapor phase, it exists as a dimer (Al₂Cl₆).
3. **Reason for Dimerization:** Aluminium has an incomplete octet and vacant d orbitals. This allows it to accept electron pairs from chlorine atoms.
4. **Formation of Chloro-Bridged Structure:** In the vapor phase, two AlCl₃ units combine to form Al₂Cl₆, where each Al atom is surrounded by three Cl atoms, and there are coordinate bonds formed between the Al and Cl atoms of adjacent molecules.

**Conclusion for Statement 1:** This statement is true.

### Step 2: Analyze Statement 2
**Statement 2:** Aluminium chloride in acidified aqueous solution forms [Al(H₂O)₆]³⁺.

1. **Dissolution in Water:** When AlCl₃ is dissolved in water, it interacts with water molecules.
2. **Coordination with Water:** Aluminium can coordinate with six water molecules due to its ability to accept electron pairs, forming the complex ion [Al(H₂O)₆]³⁺.
3. **Charge on the Complex:** The complex carries a +3 charge due to the three positive charges on the aluminium ion.

**Conclusion for Statement 2:** This statement is also true.

### Step 3: Determine the Relationship Between the Statements
- **Statement 1 is true** because it accurately describes the structure of aluminium chloride in the vapor phase.
- **Statement 2 is true** as it correctly describes the formation of the hexaaquaaluminium ion in acidified aqueous solution.
- However, **Statement 2 does not explain Statement 1**. The formation of the hexaaquaaluminium ion is a separate process and does not elucidate why aluminium chloride has a chloro-bridged structure in the vapor phase.

### Final Conclusion
- **Both statements are true, but Statement 2 is not the correct explanation for Statement 1.**

### Answer:
Option B: Statement 1 is true, Statement 2 is true, but Statement 2 is not the correct explanation of Statement 1.

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