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Mark the incorrect pair from the following.
- a)Schottky defect- Equal number of cations and anions are missing
- b)Frenkel defect - Dislocation of cation from its normal site to an interstitial site
- c)Impurity defect- CdCl2 in AgCl crystal to create cationic vacancy
- d)Metal excess defect - Fe0.93O
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Mark the incorrect pair from the following.a)Schottky defect- Equal nu...
Fe0 93O is a metal deficiency defect. In FeO, some Fe2+ ions are missing and the loss of positive charge is made up by Fe3+ ions.
Most Upvoted Answer
Mark the incorrect pair from the following.a)Schottky defect- Equal nu...
Solution:
Metal excess defect refers to a type of point defect in which there is an excess of metal cations in the crystal lattice. This defect occurs when some metal ions occupy interstitial sites in the crystal lattice.
In the given options, the incorrect pair is option 'D' - Metal excess defect - Fe0.93O.
Explanation:
Metal Excess Defect:
In a metal excess defect, the crystal lattice of a solid is distorted due to the presence of extra metal ions. This distortion occurs when some metal ions occupy interstitial sites, which are the spaces between the regular lattice points. This defect is often observed in metal oxides.
Fe0.93O:
The formula Fe0.93O suggests that the compound has an excess of iron ions (Fe) and a deficiency of oxygen ions (O). However, this is not an example of a metal excess defect. It is important to note that metal excess defects occur in crystal lattices where the metal ions occupy interstitial sites, not when there is an excess of metal ions in the compound.
Correct Examples:
Let's discuss the other options to understand the correct examples of different types of defects:
a) Schottky Defect:
Schottky defect refers to the equal number of cations and anions missing from their respective lattice sites, resulting in the formation of vacancies. This defect is commonly observed in ionic compounds such as NaCl.
b) Frenkel Defect:
Frenkel defect occurs when a cation is displaced from its regular lattice site to an interstitial site. This defect is usually observed in compounds with a large difference in the size of cations and anions, such as AgCl.
c) Impurity Defect:
Impurity defect refers to the introduction of impurity ions into a crystal lattice to create vacancies or to occupy interstitial sites. CdCl2 in AgCl crystal creating cationic vacancies is an example of an impurity defect.
Therefore, the correct pair from the given options is:
c) Impurity defect - CdCl2 in AgCl crystal to create cationic vacancy
Metal excess defect refers to a type of point defect in which there is an excess of metal cations in the crystal lattice. This defect occurs when some metal ions occupy interstitial sites in the crystal lattice.
In the given options, the incorrect pair is option 'D' - Metal excess defect - Fe0.93O.
Explanation:
Metal Excess Defect:
In a metal excess defect, the crystal lattice of a solid is distorted due to the presence of extra metal ions. This distortion occurs when some metal ions occupy interstitial sites, which are the spaces between the regular lattice points. This defect is often observed in metal oxides.
Fe0.93O:
The formula Fe0.93O suggests that the compound has an excess of iron ions (Fe) and a deficiency of oxygen ions (O). However, this is not an example of a metal excess defect. It is important to note that metal excess defects occur in crystal lattices where the metal ions occupy interstitial sites, not when there is an excess of metal ions in the compound.
Correct Examples:
Let's discuss the other options to understand the correct examples of different types of defects:
a) Schottky Defect:
Schottky defect refers to the equal number of cations and anions missing from their respective lattice sites, resulting in the formation of vacancies. This defect is commonly observed in ionic compounds such as NaCl.
b) Frenkel Defect:
Frenkel defect occurs when a cation is displaced from its regular lattice site to an interstitial site. This defect is usually observed in compounds with a large difference in the size of cations and anions, such as AgCl.
c) Impurity Defect:
Impurity defect refers to the introduction of impurity ions into a crystal lattice to create vacancies or to occupy interstitial sites. CdCl2 in AgCl crystal creating cationic vacancies is an example of an impurity defect.
Therefore, the correct pair from the given options is:
c) Impurity defect - CdCl2 in AgCl crystal to create cationic vacancy
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Mark the incorrect pair from the following.a)Schottky defect- Equal number of cations and anions are missingb)Frenkel defect - Dislocation of cation from its normal site to an interstitial sitec)Impurity defect- CdCl2 in AgCl crystal to create cationic vacancyd)Metal excess defect - Fe0.93OCorrect answer is option 'D'. Can you explain this answer?
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Mark the incorrect pair from the following.a)Schottky defect- Equal number of cations and anions are missingb)Frenkel defect - Dislocation of cation from its normal site to an interstitial sitec)Impurity defect- CdCl2 in AgCl crystal to create cationic vacancyd)Metal excess defect - Fe0.93OCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Mark the incorrect pair from the following.a)Schottky defect- Equal number of cations and anions are missingb)Frenkel defect - Dislocation of cation from its normal site to an interstitial sitec)Impurity defect- CdCl2 in AgCl crystal to create cationic vacancyd)Metal excess defect - Fe0.93OCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Mark the incorrect pair from the following.a)Schottky defect- Equal number of cations and anions are missingb)Frenkel defect - Dislocation of cation from its normal site to an interstitial sitec)Impurity defect- CdCl2 in AgCl crystal to create cationic vacancyd)Metal excess defect - Fe0.93OCorrect answer is option 'D'. Can you explain this answer?.
Mark the incorrect pair from the following.a)Schottky defect- Equal number of cations and anions are missingb)Frenkel defect - Dislocation of cation from its normal site to an interstitial sitec)Impurity defect- CdCl2 in AgCl crystal to create cationic vacancyd)Metal excess defect - Fe0.93OCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Mark the incorrect pair from the following.a)Schottky defect- Equal number of cations and anions are missingb)Frenkel defect - Dislocation of cation from its normal site to an interstitial sitec)Impurity defect- CdCl2 in AgCl crystal to create cationic vacancyd)Metal excess defect - Fe0.93OCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Mark the incorrect pair from the following.a)Schottky defect- Equal number of cations and anions are missingb)Frenkel defect - Dislocation of cation from its normal site to an interstitial sitec)Impurity defect- CdCl2 in AgCl crystal to create cationic vacancyd)Metal excess defect - Fe0.93OCorrect answer is option 'D'. Can you explain this answer?.
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