What is an ideal crystal ? Name the types of the defects which arise in a crystal.

What do you understand by imperfections in ionic crystals ? Name the types of imperfections which occur in ionic crystals.

What do you understand by imperfections in ionic crystals? Name the types of imperfections which generally occur in ionic crystals.

What type of stoichiometric defects are noticed in crystals?

What are the types of lattice imperfection found in crystals?

Name the defect in the following crystal:

Define Frenkel defect in solid crystal.

What are molecular crystals ? Name the forces which are holding the constituent particles in molecular crystals.

For a crystal of diamond, state : The type of lattice in which it crystallizes.

Which of the following defects is present in KCl crystals ?

Discuss briefly the point defects in ionic crystals.