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12th Class Chemistry The Solid State / ठोस प्रावस्था Question Bank 12th CBSE Chemistry The Solid State

  • question_answer
      Schottky defects generate an equal number of cation and anion vacancies while doping produces only cation vacancies and not anion vacancies. Why?

    Answer:

      Schottky defects exist in pairs to maintain electrical neutrality. So it generates equal number of cation and anion vacancies. Ionic solids are doped with metal ions of higher valency. Therefore some cations of lower valency are displaced to maintain electrical neutrality. Hence only cation vacancies are produced not anion vacancies.


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