Q.56) How many of the following crystal defects can account for cationic vacancies in NaCl ? (assume that all anionic sites are occupied) i) Frenkel defect ii) Schottky defect iii) Impurity defect due to crystallisation of molten NaCl containing a little amount of SrCl. iv) Non-stoichiometric defect arising when crystals of NaCl are heated in an atmosphere of sodium vapour. 1) 1 2) 2 3) 3 4) 4

Q.56) How many of the following crystal defects can account for cati

1.	Q.56) How many of the following crystal defects can account for cationic vacancies in NaCl ? (assume that all anionic sites are occupied) i) Frenkel defect ii) Schottky defect iii) Impurity defect due to crystallisation of molten NaCl containing a little amount of SrCl. iv) Non-stoichiometric defect arising when crystals of NaCl are heated in an atmosphere of sodium vapour. 1) 1 2) 2 3) 3 4) 4
Answer» 3). 3 DEFECTS are seenExplanation:Those are 2,3,4