Question

The $NaCl$ structure can be converted into $CsCl$ structure by :

• A. Application of high pressure
• B. Passing it through a magnetic field
• C. Application of low pressure
• D. The conversion is not possible

Answer 1

The correct option is A Application of high pressure

The crystal of $NaCl$ having the coordination number 6 can be converted to $CsCl$ structure having coordination number 8 by increasing the number of unit cells.This can be done by increasing the pressure.
On increasing pressure :
$\underset{6:6}{NaCl\text{Structure}}\rightleftharpoons \underset{8:8}{CsCl\text{Structure}}$