Question

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 1

Answer:

3). 3 defects are seen

Explanation:

Those are 2,3,4