What is the percentage of $Fe^{+3}$ among cations in $Fe_{0.93}O_{1.00}$?
- A$7/93 \times 100$
- B$14/93 \times 100$
- C$79/93 \times 100$
- D$14/93 \times 100$ (Corrected to match calculation)
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Explain metal excess defects.
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View SolutionWhich type of defect is observed in $AgBr$?
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View SolutionWhich of the following statements are not correct?
$(A)$ Diode is a combination of $n$-type and $p$-type semiconductors.
$(B)$ Silicon or germanium is electron rich impurity.
$(C)$ Phosphorus and arsenic are electron deficient impurities.
$(D)$ Schottky defect decreases the density of the crystal.
$(A)$ Diode is a combination of $n$-type and $p$-type semiconductors.
$(B)$ Silicon or germanium is electron rich impurity.
$(C)$ Phosphorus and arsenic are electron deficient impurities.
$(D)$ Schottky defect decreases the density of the crystal.
Ionic solids,which have anionic vacancies due to metal excess defect,develop colour. Explain with the help of a suitable example.
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View SolutionIf $NaCl$ is doped with $10^{-4} \ mol \%$ of $SrCl_2,$ the concentration of cation vacancies will be $(N_A = 6.02 \times 10^{23} \ mol^{-1}).$
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