Which of following compounds shows both Schottky as well as Frenkel defect -

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  1. AgF 
  2. AgBr 
  3. Agcl
  4. Nacl

Answer (Detailed Solution Below)

Option 2 : AgBr 
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Detailed Solution

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Frenkel defect:

  • It is a type of point defect in a crystal lattice when an atom or ion leaves its own lattice site vacant and instead of that, it occupies a normally vacant site.
  • It is also called a Dislocation defect.
     

Schottky defect:

  • It was named after Walter H. Schottky.
  • It is a type of point defect in a crystal lattice that occurs when oppositely charged ions or atoms leave their lattice sites, creating vacancies.
     

The radius ratio for AgBr is intermediate. Thus, it shows both Frenkel and Schottky's defects.

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