STATEMENT -1 : In NaCl structure , ` Na^(+)` ion occupy octahedral holes and `Cl^(-)` ions
occupy ccp.
STATEMENT -2 : The distance of the nearest neighours in NaCl structure is `a//2` where a
is the edge length of the cube .

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 solve the question, we need to analyze the two statements regarding the NaCl structure and determine their correctness.

### Step 1: Analyze Statement 1
**Statement 1:** In NaCl structure, Na⁺ ion occupies octahedral holes and Cl⁻ ions occupy ccp.

- **Understanding NaCl Structure:**
- NaCl has a face-centered cubic (FCC) arrangement of Cl⁻ ions. In this arrangement, Cl⁻ ions are located at the corners and the face centers of the cubic unit cell.
- The Na⁺ ions occupy the octahedral voids created by the arrangement of Cl⁻ ions. In a face-centered cubic structure, octahedral voids are located at the body center and at the edge centers of the cube.

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

### Step 2: Analyze Statement 2
**Statement 2:** The distance of the nearest neighbors in NaCl structure is a/2 where a is the edge length of the cube.

- **Finding the Nearest Neighbor Distance:**
- In the NaCl structure, the nearest neighbors for Na⁺ ions are the Cl⁻ ions that are located at the corners of the cube.
- The distance between a Na⁺ ion (located in the octahedral void at the edge center) and a Cl⁻ ion (located at the corner) can be calculated using geometry.
- The distance from the center of the edge (where Na⁺ is located) to the corner (where Cl⁻ is located) is half the edge length of the cube.
- Therefore, the distance between the nearest neighbors (Na⁺ and Cl⁻) is indeed a/2.

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

### Final Conclusion
Both statements are correct. Therefore, the answer is that both statements are true, and Statement 2 is a correct explanation of Statement 1.

### Summary of the Solution
- **Statement 1:** Correct (Na⁺ occupies octahedral holes, Cl⁻ occupies ccp).
- **Statement 2:** Correct (Nearest neighbor distance is a/2).