Which of the following statements is $WRONG$?
- A$A$. $A$ metal can show only stoichiometric defects
- B$B$. Schottky defect reduces the density of a solid due to significant increase in volume.
- C$C$. Impurity defect always change the density.
- D$D$. Solids having $F$-centres have metal excess defect due to missing anions
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Similar Questions
Analysis 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 SolutionWhat is stoichiometric defect? State its types.
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View SolutionIf $NaCl$ is doped with $10^{-3} \ mol \ \%$ $SrCl_2$,then the concentration of cation vacancies will be
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View SolutionThe defect that arises when smaller cations move into interstitial sites in a crystal lattice is known as ..............
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View SolutionExplain Schottky defect and Frenkel defect.
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