Frenkel defect is caused due to
- AAn ion missing from the normal lattice site creating a vacancy
- BAn extra positive ion occupying an interstitial position in the lattice
- CAn extra negative ion occupying an interstitial position in the lattice
- DThe shift of a positive ion from its normal lattice site to an interstitial site
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View SolutionAnalysis of the density of an electrically neutral $NaCl$ crystal containing vacancies yielded the following results:
$(i)$ Density of $NaCl$ crystal with all sites occupied $= 2.178 \times 10^3 \ kg \ m^{-3}$
$(ii)$ Density of $NaCl$ crystal with vacancies $= 2.165 \times 10^3 \ kg \ m^{-3}$
Then the percentage of vacancies in the $NaCl$ crystal is .....
$(i)$ Density of $NaCl$ crystal with all sites occupied $= 2.178 \times 10^3 \ kg \ m^{-3}$
$(ii)$ Density of $NaCl$ crystal with vacancies $= 2.165 \times 10^3 \ kg \ m^{-3}$
Then the percentage of vacancies in the $NaCl$ crystal is .....
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View SolutionWhich of the following ionic crystals exhibits Frenkel defect?
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