Question

The ability of a given substance to assume two or more crystalline structure is called :

• A. amorphism
• B. isomorphism
• C. polymorphism
• D. isomerism

Answer 1

Answer: (C)

polymorphism

Answer 2

The phenomenon by which a certain crystalline compound exists in two or more different crystalline forms, is called polymorphism e. g., $CaCO_{3}$ occurs in two polymorphic forms i.e., calcite (rhombohedral) and aragonite (orthorhombic).