Class 12 Chemistry The Solid State Impurity defect

Impurity defect

  • Crystallization of molten NaCl with little amount of SrCl2 results in Sr2+ occupying some of the sites of Na+
  • Each Sr2+ replaces two Na+ ions.
  • It occupies the site of one ion and the other site remains vacant.
  • The cationic vacancies thereby produced are equal in number to that of Sr2+
  • Solid solution of CdCl2 and AgCl.

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