Question

In CsCl type structure, the co-ordination number of ${Cs}^+$ and ${Cl}^-$ respectively are:

• A. 6, 6
• B. 6, 8
• C. 8, 8
• D. 8, 6

Hint:

In a CsCl structure, each ion has a coordination number of 8, reflecting the cubic lattice arrangement of the ions.

Answer 1

The Correct Option is C

Step 1: In a CsCl (cesium chloride) type structure, the cations and anions form a simple cubic lattice, with one ion located at the center of the cube and the other at the corners.
Step 2: Each ${Cs}^+$ ion is surrounded by 8 ${Cl}^-$ ions and vice versa, resulting in a coordination number of 8 for both ${Cs}^+$ and ${Cl}^-$.
Step 3: Therefore, the correct answer is 8 for both ions.