Which of the following compounds is likely to show both Frenkel and Schottky defects in its crystalline form?
Which of the following compounds is likely to show both Frenkel and Schottky defects in its crystalline form?
- AgBr
- CsCl
- KBr
- ZnS
The Correct Option is A
Solution and Explanation
Since AgBr has intermediate radius ratio.
So, AgBr shows both schottky & Frenkel defects
Whereas,
ZnS Shows Frenkel defects
KBr and CsCl show Schottky defects.
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Concepts Used:
Imperfections in Solids
Any irregularity in the pattern of crystal arrangement in a solid lattice is called imperfection in solids. The occurrence of defects takes place when crystallization (the process of formation of crystals) occurs at a very fast or at an intermediate rate.
Basically, defects fall out in two forms:
- Point Defect
When the irregularities exist from the ideal arrangement around a point or an atom in solids, the defect is known as a point defect. Types of point defects are:
- Stoichiometric defects
- Non-stoichiometric defects
- Impurity defects
- Line Defect
When the deviation from the ideal arrangement exists in the entire row of lattice points, the defect is called line defect.