318837
Which among the following statements is true about Schottky defect?
1 In this defect cation and anion are lacking in stoichiometric proportion
2 Formation of metal alloy is example of this defect
3 In this cation or anion moves from regular site to place between lattice site
4 In this regular cation is replaced by different cation
Explanation:
In Schottky defect, cation and anion are lacking in stoichiometric proportion. It is basically a vacancy defect in ionic solids. In order to maintain electrical neutrality, the number of missing cations and anions are equal. This defect can easily be illustrated by the following figure.
MHTCET - 2019
CHXII01:THE SOLID STATE
318838
When light strikes a photographic (AgBr) paper, silver atoms move in through these defects to :
1 Form -ve images
2 Form tiny clumps of silver atoms
3 Form a colour image
4 None of these
Explanation:
Light gives energy to electrons in the photographic film. Some of these electrons find their way back to silver ions, transforming them back to atoms. The ions leave its correct lattice site and occupies an interstitial site but silver atoms are not colorless. They are black. So, a photographic film exposed to light turns black at every point where light strikes a silver ion.
CHXII01:THE SOLID STATE
318839
Which of the following compounds shows both Frenkel and Schottky defects?
1 \(\mathrm{NaCl}\)
2 \(\mathrm{AgCl}\)
3 \(\mathrm{AgBr}\)
4 \(\mathrm{KCl}\)
Explanation:
\(\mathrm{NaCl}\) and \(\mathrm{KCl}\) exhibit Schottky defect, \(\mathrm{AgCl}\) exhibits Frenkel defect. \(\mathrm{AgBr}\) is the compound that exhibits, Frenkel as well as Schottky defects.
CHXII01:THE SOLID STATE
318840
Which of the following crystals does not exhibit Frenkel defect?
318837
Which among the following statements is true about Schottky defect?
1 In this defect cation and anion are lacking in stoichiometric proportion
2 Formation of metal alloy is example of this defect
3 In this cation or anion moves from regular site to place between lattice site
4 In this regular cation is replaced by different cation
Explanation:
In Schottky defect, cation and anion are lacking in stoichiometric proportion. It is basically a vacancy defect in ionic solids. In order to maintain electrical neutrality, the number of missing cations and anions are equal. This defect can easily be illustrated by the following figure.
MHTCET - 2019
CHXII01:THE SOLID STATE
318838
When light strikes a photographic (AgBr) paper, silver atoms move in through these defects to :
1 Form -ve images
2 Form tiny clumps of silver atoms
3 Form a colour image
4 None of these
Explanation:
Light gives energy to electrons in the photographic film. Some of these electrons find their way back to silver ions, transforming them back to atoms. The ions leave its correct lattice site and occupies an interstitial site but silver atoms are not colorless. They are black. So, a photographic film exposed to light turns black at every point where light strikes a silver ion.
CHXII01:THE SOLID STATE
318839
Which of the following compounds shows both Frenkel and Schottky defects?
1 \(\mathrm{NaCl}\)
2 \(\mathrm{AgCl}\)
3 \(\mathrm{AgBr}\)
4 \(\mathrm{KCl}\)
Explanation:
\(\mathrm{NaCl}\) and \(\mathrm{KCl}\) exhibit Schottky defect, \(\mathrm{AgCl}\) exhibits Frenkel defect. \(\mathrm{AgBr}\) is the compound that exhibits, Frenkel as well as Schottky defects.
CHXII01:THE SOLID STATE
318840
Which of the following crystals does not exhibit Frenkel defect?
318837
Which among the following statements is true about Schottky defect?
1 In this defect cation and anion are lacking in stoichiometric proportion
2 Formation of metal alloy is example of this defect
3 In this cation or anion moves from regular site to place between lattice site
4 In this regular cation is replaced by different cation
Explanation:
In Schottky defect, cation and anion are lacking in stoichiometric proportion. It is basically a vacancy defect in ionic solids. In order to maintain electrical neutrality, the number of missing cations and anions are equal. This defect can easily be illustrated by the following figure.
MHTCET - 2019
CHXII01:THE SOLID STATE
318838
When light strikes a photographic (AgBr) paper, silver atoms move in through these defects to :
1 Form -ve images
2 Form tiny clumps of silver atoms
3 Form a colour image
4 None of these
Explanation:
Light gives energy to electrons in the photographic film. Some of these electrons find their way back to silver ions, transforming them back to atoms. The ions leave its correct lattice site and occupies an interstitial site but silver atoms are not colorless. They are black. So, a photographic film exposed to light turns black at every point where light strikes a silver ion.
CHXII01:THE SOLID STATE
318839
Which of the following compounds shows both Frenkel and Schottky defects?
1 \(\mathrm{NaCl}\)
2 \(\mathrm{AgCl}\)
3 \(\mathrm{AgBr}\)
4 \(\mathrm{KCl}\)
Explanation:
\(\mathrm{NaCl}\) and \(\mathrm{KCl}\) exhibit Schottky defect, \(\mathrm{AgCl}\) exhibits Frenkel defect. \(\mathrm{AgBr}\) is the compound that exhibits, Frenkel as well as Schottky defects.
CHXII01:THE SOLID STATE
318840
Which of the following crystals does not exhibit Frenkel defect?
318837
Which among the following statements is true about Schottky defect?
1 In this defect cation and anion are lacking in stoichiometric proportion
2 Formation of metal alloy is example of this defect
3 In this cation or anion moves from regular site to place between lattice site
4 In this regular cation is replaced by different cation
Explanation:
In Schottky defect, cation and anion are lacking in stoichiometric proportion. It is basically a vacancy defect in ionic solids. In order to maintain electrical neutrality, the number of missing cations and anions are equal. This defect can easily be illustrated by the following figure.
MHTCET - 2019
CHXII01:THE SOLID STATE
318838
When light strikes a photographic (AgBr) paper, silver atoms move in through these defects to :
1 Form -ve images
2 Form tiny clumps of silver atoms
3 Form a colour image
4 None of these
Explanation:
Light gives energy to electrons in the photographic film. Some of these electrons find their way back to silver ions, transforming them back to atoms. The ions leave its correct lattice site and occupies an interstitial site but silver atoms are not colorless. They are black. So, a photographic film exposed to light turns black at every point where light strikes a silver ion.
CHXII01:THE SOLID STATE
318839
Which of the following compounds shows both Frenkel and Schottky defects?
1 \(\mathrm{NaCl}\)
2 \(\mathrm{AgCl}\)
3 \(\mathrm{AgBr}\)
4 \(\mathrm{KCl}\)
Explanation:
\(\mathrm{NaCl}\) and \(\mathrm{KCl}\) exhibit Schottky defect, \(\mathrm{AgCl}\) exhibits Frenkel defect. \(\mathrm{AgBr}\) is the compound that exhibits, Frenkel as well as Schottky defects.
CHXII01:THE SOLID STATE
318840
Which of the following crystals does not exhibit Frenkel defect?
