Q20 / 120 · VITEEE 2008 · Chemistry

Schottky defects occurs mainly in electrovalent compounds where

  • A
    positive ions and negative ions are of different size
  • Correct answer
    B
    positive ions and negative ions are of same size
  • C
    positive ions are small and negative ions are big
  • D
    positive ions are big and negative ions are small

Solution

Schottky defect is generally shown by compounds which have ionic nature and small difference in the size of cations \& anions. In this defect equal no. of cations \& anions is found missing from their lattice sites.

Hence, the correct answer is option: 'B'.

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