Statement-1 C.N of `Cs^(+)` ion in CsCl structure is 8
Statement -2 CsCl crystallizes in BCC structure

Options

A. If both the statement are TRUE and STATEMENT -2 is the correct explanation of STATEMENT -1
B. If both the statement are TRUE and STATEMENT -2 is NOT the correct explanation of STATEMENT -1
C. If STATEMENT -1 is the correcct and TRUE and STATEMENT -2 is FALSE
D. If STATEMENT -1 is the correcct and FALSE and STATEMENT -2 is TRUE

Answer

To analyze the statements regarding the CsCl structure, we can break down the solution into clear steps:

### Step 1: Understand the CsCl Structure
- CsCl (cesium chloride) crystallizes in a body-centered cubic (BCC) structure. In this structure, chloride ions (Cl⁻) occupy the corners of the cube, and cesium ions (Cs⁺) occupy the body center.

### Step 2: Identify the Coordination Number
- The coordination number (C.N.) of an ion in a crystal structure is defined as the number of nearest neighboring ions surrounding it.
- In the CsCl structure, the Cs⁺ ion is surrounded by 8 Cl⁻ ions located at the corners of the cube. Therefore, the coordination number of Cs⁺ is 8.

### Step 3: Verify the Statements
- **Statement 1**: The coordination number of Cs⁺ in CsCl structure is 8. This statement is correct based on the arrangement of ions in the BCC structure.
- **Statement 2**: CsCl crystallizes in a BCC structure. This statement is also correct as CsCl indeed adopts a BCC lattice.

### Step 4: Determine the Relationship Between the Statements
- Since both statements are true, we need to assess if Statement 2 provides a correct explanation for Statement 1. The BCC structure directly leads to the coordination number of 8 for the Cs⁺ ion, as it is surrounded by 8 Cl⁻ ions.

### Conclusion
- Both statements are true, and Statement 2 is the correct explanation for Statement 1.

### Final Answer
- Both statements are true, and Statement 2 is the correct explanation for Statement 1.

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