Question
Chemistry Question on Crystal defects
Which kind of defect is observed in AgBr?
A
Vacancy defect
B
Interstitial defect
C
Both Frenkel and Schottky defects
D
Only Schottky defect
Answer
Both Frenkel and Schottky defects
Explanation
Solution
Silver bromide (AgBr) can exhibit both Frenkel and Schottky defects. A Frenkel defect occurs when an ion is displaced from its lattice site to an interstitial position, while a Schottky defect involves the creation of vacancies for both cations and anions to maintain charge neutrality. Thus, AgBr displays characteristics of both types of defects due to its ionic structure.