Which solid among the following can show both Schottky and Frenkel defects?

ANaCl
BCsCl
CAgBr
DZnS

Answer: C

AgBr has a small, polarisable

Ag X^{+}

that can move to interstitial sites (Frenkel) and the lattice is also of a type with comparable ion sizes allowing Schottky vacancies. NaCl and CsCl show only Schottky, and ZnS shows only Frenkel.

Practice Solid State More on Defects in solids

Previous questionNext question

More questions on Defects in solids

Zinc oxide turns yellow on heating and regains its white colour on cooling. This is because JEE Main level
Perfect NaCl has density 2.165 g cm^-3. If 0.5% of the Na+ and Cl- sites are vacant in equal numbers (Schottky defects) with no change in ce... JEE Main level
Which of the following gives an n-type semiconductor? JEE Main level
NaCl is doped with SrCl2 at 1.2x10^-2 mol%. Each Sr^2+ replaces two Na+ ions' worth of charge by creating one cationic vacancy. Using N_A=6.... JEE Main level
A sample of 5.85 g of NaCl (M=58.5 g mol^-1) has a fraction 2.5x10^-8 of its cation sites vacant because of Schottky defects. Using N_A=6.02... JEE Main level
Which statements about point defects in ionic solids are correct? JEE Main level