Cesium chloried on heating to `760 K` changes in

Options

A. CsCl (g)
B. NaCl structure
C. antifluorite structure
D. ZnS structure

Answer

To solve the question regarding the change in structure of cesium chloride (CsCl) when heated to 760 K, we can follow these steps:

### Step 1: Understand the Structures
Cesium chloride (CsCl) has a body-centered cubic (BCC) structure at room temperature. It is important to know that different temperatures and pressures can lead to structural changes in ionic compounds.

### Step 2: Identify the Temperature
The question specifies heating CsCl to 760 K. We need to determine if this temperature is significant enough to cause a phase transition or structural change in CsCl.

### Step 3: Research Phase Transitions
Research indicates that CsCl can undergo a structural change when heated. At elevated temperatures, specifically around 760 K, CsCl transitions from its original BCC structure to a face-centered cubic (FCC) structure similar to that of sodium chloride (NaCl).

### Step 4: Conclusion
Therefore, when cesium chloride is heated to 760 K, it changes from its CsCl structure to a NaCl structure.

### Final Answer
Cesium chloride (CsCl) changes to sodium chloride (NaCl) structure upon heating to 760 K.

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