318850
Which one of the following has Schottky defect?
1 NaCl
2 AgCl
3 FeS
4 ZnS
Explanation:
Schotky defect is found in ionic compounds which have high coordination number and small difference in the size of cation and anion. So correct option is (1).
CHXII01:THE SOLID STATE
318851
Which of the following is a correct statement?
1 The ionic crystal of \(\mathrm{AgBr}\) has Sctottky defect
2 The unit cell having crystal parameters, \(a=b \neq c, \alpha=\beta=90^{\circ}, \gamma=120^{\circ}\) is hexagonal
3 In ionic compounds having Frenkel defect, the ratio \(r_{+} / r_{-}\)is high
4 The coordination number of \(\mathrm{Na}^{+}\)ion in \(\mathrm{NaCl}\) is 4
Explanation:
A crystal system is hexagonal if its unit cell has \(a=b \neq c\) axial ratio and \(\alpha=\beta=90^{\circ}\), \(\gamma=120^{\circ}\) axial angles.
CHXII01:THE SOLID STATE
318852
Which of the following point defects are shown by \(\operatorname{AgBr}(\mathrm{s})\) crystals? (A) Schottky defect (B) Frenkel defect (C) Metal excess defect (D) Metal deficiency defect
1 (A) and (B)
2 (C) and (D)
3 (A) and (C)
4 (B) and (D)
Explanation:
\(\mathrm{AgBr}\) exhibits both Schottky defect and Frenkel defect.
CHXII01:THE SOLID STATE
318853
Find the correct statement about crystal defects.
1 Schottky defect makes a crystal electrically charged.
2 Frenkel defect alters the density of the crystal.
3 Metal excess defect gives colour to the crystal.
4 Metal deficiency defect can be found in the halides of alkali metals.
Explanation:
In Schottky defect, electrical neutrality is maintained as equal number of cations and anions are missing from the lattice sites.Frenkel defect does not alter the density of the crystal as no ions are missing from the crystal as a whole.Metal deficiency defect can be found in transition metals which show variable valencies.
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CHXII01:THE SOLID STATE
318850
Which one of the following has Schottky defect?
1 NaCl
2 AgCl
3 FeS
4 ZnS
Explanation:
Schotky defect is found in ionic compounds which have high coordination number and small difference in the size of cation and anion. So correct option is (1).
CHXII01:THE SOLID STATE
318851
Which of the following is a correct statement?
1 The ionic crystal of \(\mathrm{AgBr}\) has Sctottky defect
2 The unit cell having crystal parameters, \(a=b \neq c, \alpha=\beta=90^{\circ}, \gamma=120^{\circ}\) is hexagonal
3 In ionic compounds having Frenkel defect, the ratio \(r_{+} / r_{-}\)is high
4 The coordination number of \(\mathrm{Na}^{+}\)ion in \(\mathrm{NaCl}\) is 4
Explanation:
A crystal system is hexagonal if its unit cell has \(a=b \neq c\) axial ratio and \(\alpha=\beta=90^{\circ}\), \(\gamma=120^{\circ}\) axial angles.
CHXII01:THE SOLID STATE
318852
Which of the following point defects are shown by \(\operatorname{AgBr}(\mathrm{s})\) crystals? (A) Schottky defect (B) Frenkel defect (C) Metal excess defect (D) Metal deficiency defect
1 (A) and (B)
2 (C) and (D)
3 (A) and (C)
4 (B) and (D)
Explanation:
\(\mathrm{AgBr}\) exhibits both Schottky defect and Frenkel defect.
CHXII01:THE SOLID STATE
318853
Find the correct statement about crystal defects.
1 Schottky defect makes a crystal electrically charged.
2 Frenkel defect alters the density of the crystal.
3 Metal excess defect gives colour to the crystal.
4 Metal deficiency defect can be found in the halides of alkali metals.
Explanation:
In Schottky defect, electrical neutrality is maintained as equal number of cations and anions are missing from the lattice sites.Frenkel defect does not alter the density of the crystal as no ions are missing from the crystal as a whole.Metal deficiency defect can be found in transition metals which show variable valencies.
318850
Which one of the following has Schottky defect?
1 NaCl
2 AgCl
3 FeS
4 ZnS
Explanation:
Schotky defect is found in ionic compounds which have high coordination number and small difference in the size of cation and anion. So correct option is (1).
CHXII01:THE SOLID STATE
318851
Which of the following is a correct statement?
1 The ionic crystal of \(\mathrm{AgBr}\) has Sctottky defect
2 The unit cell having crystal parameters, \(a=b \neq c, \alpha=\beta=90^{\circ}, \gamma=120^{\circ}\) is hexagonal
3 In ionic compounds having Frenkel defect, the ratio \(r_{+} / r_{-}\)is high
4 The coordination number of \(\mathrm{Na}^{+}\)ion in \(\mathrm{NaCl}\) is 4
Explanation:
A crystal system is hexagonal if its unit cell has \(a=b \neq c\) axial ratio and \(\alpha=\beta=90^{\circ}\), \(\gamma=120^{\circ}\) axial angles.
CHXII01:THE SOLID STATE
318852
Which of the following point defects are shown by \(\operatorname{AgBr}(\mathrm{s})\) crystals? (A) Schottky defect (B) Frenkel defect (C) Metal excess defect (D) Metal deficiency defect
1 (A) and (B)
2 (C) and (D)
3 (A) and (C)
4 (B) and (D)
Explanation:
\(\mathrm{AgBr}\) exhibits both Schottky defect and Frenkel defect.
CHXII01:THE SOLID STATE
318853
Find the correct statement about crystal defects.
1 Schottky defect makes a crystal electrically charged.
2 Frenkel defect alters the density of the crystal.
3 Metal excess defect gives colour to the crystal.
4 Metal deficiency defect can be found in the halides of alkali metals.
Explanation:
In Schottky defect, electrical neutrality is maintained as equal number of cations and anions are missing from the lattice sites.Frenkel defect does not alter the density of the crystal as no ions are missing from the crystal as a whole.Metal deficiency defect can be found in transition metals which show variable valencies.
318850
Which one of the following has Schottky defect?
1 NaCl
2 AgCl
3 FeS
4 ZnS
Explanation:
Schotky defect is found in ionic compounds which have high coordination number and small difference in the size of cation and anion. So correct option is (1).
CHXII01:THE SOLID STATE
318851
Which of the following is a correct statement?
1 The ionic crystal of \(\mathrm{AgBr}\) has Sctottky defect
2 The unit cell having crystal parameters, \(a=b \neq c, \alpha=\beta=90^{\circ}, \gamma=120^{\circ}\) is hexagonal
3 In ionic compounds having Frenkel defect, the ratio \(r_{+} / r_{-}\)is high
4 The coordination number of \(\mathrm{Na}^{+}\)ion in \(\mathrm{NaCl}\) is 4
Explanation:
A crystal system is hexagonal if its unit cell has \(a=b \neq c\) axial ratio and \(\alpha=\beta=90^{\circ}\), \(\gamma=120^{\circ}\) axial angles.
CHXII01:THE SOLID STATE
318852
Which of the following point defects are shown by \(\operatorname{AgBr}(\mathrm{s})\) crystals? (A) Schottky defect (B) Frenkel defect (C) Metal excess defect (D) Metal deficiency defect
1 (A) and (B)
2 (C) and (D)
3 (A) and (C)
4 (B) and (D)
Explanation:
\(\mathrm{AgBr}\) exhibits both Schottky defect and Frenkel defect.
CHXII01:THE SOLID STATE
318853
Find the correct statement about crystal defects.
1 Schottky defect makes a crystal electrically charged.
2 Frenkel defect alters the density of the crystal.
3 Metal excess defect gives colour to the crystal.
4 Metal deficiency defect can be found in the halides of alkali metals.
Explanation:
In Schottky defect, electrical neutrality is maintained as equal number of cations and anions are missing from the lattice sites.Frenkel defect does not alter the density of the crystal as no ions are missing from the crystal as a whole.Metal deficiency defect can be found in transition metals which show variable valencies.