What type of vacancy defect is shown by a crystal of sodium chloride? 

What type of stoichiometric defect is shown by AgCl ?

Examine the given defective crystal and {:(A^(+),B^(-),A^(+),B^(-),A^(+)),(B^(-),0,B^(-),A^(+),B^(-)),(A^(+),B^(-),A^(+),0,A^(+)),(B^(-),A^(+),B^(-),A^(+),B^(-)):} Answer the following questions : (i) What type of stoichiometirc defect is shown by the crystal ? (ii) How is the density of the crystal affected by this defect ? (iii) What type of ionic substances show such defect ?

Give any two uses of sodium chloride.

What type of stoichiometric defect is shown by AgBr and AgI ?

Name the source of sodium chloride.

Which type of Stoichmetric defect is shown by the following solids? a) AgCl b) KCl

Schottky defect in a crystal is observed when,