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Question: Answered & Verified by Expert
If molten NaCl contains SrCl2 as impurity, crystallization can generate
ChemistrySolid StateAP EAMCETAP EAMCET 2022 (04 Jul Shift 1)
Options:
  • A Anionic vacancies
  • B Cationic vacancies
  • C Metal excess defects
  • D Metal deficiency defects
Solution:
1452 Upvotes Verified Answer
The correct answer is: Cationic vacancies

If molten NaCl containing a little amount of SrCl2 is crystallised, some of the sites of Na+ ions are occupied by Sr2+. Each Sr2+ replaces two Na+ ions. It occupies the site of one ion and the other site remains vacant. The cationic vacancies thus produced are equal in number to that of Sr2+ ions.

 

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