which of the following point defects are shoen by AgBr (s) crystals ?
(a) Schottky defect
(b) Frenkel defect
( c) metal ecxess defect
(d) Metal deficiency defect

Options

A. 1 and 2
B. 3 and 4
C. 1and 3
D. 2 and 4

Answer

A

Explanation

AgBr showns both schottky as well as frenkel defect in AgBr both `Ag^(+)` and `Br^(-) ` ions are absent from from the lattice causing schttky defect However` Ag ^(+)` ions are mobile so they have tendency to move aside the lattice and trapped in interstitial site hence csuse Frenkel defect .