Question

Which of the following is not a crystalline solid?

• A. KCl
• B. CsCl
• C. Glass
• D. Rhombic sulphur

Hint:

Glass is an amorphous solid, meaning it lacks the orderly structure of crystalline solids like KCl or CsCl.

Answer 1

The Correct Option is C

Step 1: Understanding crystalline and amorphous solids.
Crystalline solids have a well-ordered structure with atoms arranged in a regular pattern. Amorphous solids, like glass, lack a well-defined structure.
Step 2: Explanation of other options.
- KCl and CsCl are both ionic solids that form a regular crystalline structure. - Rhombic sulphur is a crystalline form of sulfur.
Final Answer: \[ \boxed{\text{Glass}} \]