Close Packed Structures
CHXII01:THE SOLID STATE

318739 A crystalline solid \(X Y_{3}\) has ccp arrangement for its element \(\mathrm{Y}\). \(\mathrm{X}\) occupies

1 \(66 \%\) of tetrahedral voids
2 \(33 \%\) of tetrahedral voids
3 \(66 \%\) of octahedral voids
4 \(33 \%\) of octahedral voids
CHXII01:THE SOLID STATE

318740 Consider a fcc lattice made of a metal cation \(\left(M^{6+}\right)\) and three oxide anions per unit cell. The resultant structure would have

1 3 D network of edge shared octahedra
2 3 D network of corner shared octahedra
3 2 D network of edge shared octahedra
4 2 D network of face shared octahedra
CHXII01:THE SOLID STATE

318741 Structure of a mixed oxide is cubic close-packed (ccp). The cubic unit cell of mixed oxide is composed of oxide ions. One-fourth of the tetrahedral voids are occupied by divalent metal A and the octahedral voids are occupied by a monovalent metal \(\mathrm{B}\). The formula of the oxide is

1 \(\mathrm{ABO}_{2}\)
2 \({{\rm{A}}_{\rm{2}}}{\rm{B}}{{\rm{O}}_{\rm{2}}}\)
3 \({{\rm{A}}_{\rm{2}}}{{\rm{B}}_{\rm{3}}}{{\rm{O}}_{\rm{4}}}\)
4 \({\rm{A}}{{\rm{B}}_{\rm{2}}}{{\rm{O}}_{\rm{2}}}\)
CHXII01:THE SOLID STATE

318742 Assertion :
The number of spheres are equal to the number of octahedral void as well as tetrahedral void.
Reason :
Number of octahedral void \(=2 \times\) Number of tetrahedral void

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
CHXII01:THE SOLID STATE

318743 In a compound, \(\mathrm{n}\) atoms of element \(Y\) form ccp lattices and those of element \(X\) occupy \({\frac{{\rm{2}}}{{\rm{3}}}^{{\rm{rd}}}}\) of tetrahedral voids. The formula of the compound will be:

1 \(X_{2} Y\)
2 \(X_{3} Y_{4}\)
3 \(X_{4} Y_{3}\)
4 \(X_{2} Y_{3}\)
CHXII01:THE SOLID STATE

318739 A crystalline solid \(X Y_{3}\) has ccp arrangement for its element \(\mathrm{Y}\). \(\mathrm{X}\) occupies

1 \(66 \%\) of tetrahedral voids
2 \(33 \%\) of tetrahedral voids
3 \(66 \%\) of octahedral voids
4 \(33 \%\) of octahedral voids
CHXII01:THE SOLID STATE

318740 Consider a fcc lattice made of a metal cation \(\left(M^{6+}\right)\) and three oxide anions per unit cell. The resultant structure would have

1 3 D network of edge shared octahedra
2 3 D network of corner shared octahedra
3 2 D network of edge shared octahedra
4 2 D network of face shared octahedra
CHXII01:THE SOLID STATE

318741 Structure of a mixed oxide is cubic close-packed (ccp). The cubic unit cell of mixed oxide is composed of oxide ions. One-fourth of the tetrahedral voids are occupied by divalent metal A and the octahedral voids are occupied by a monovalent metal \(\mathrm{B}\). The formula of the oxide is

1 \(\mathrm{ABO}_{2}\)
2 \({{\rm{A}}_{\rm{2}}}{\rm{B}}{{\rm{O}}_{\rm{2}}}\)
3 \({{\rm{A}}_{\rm{2}}}{{\rm{B}}_{\rm{3}}}{{\rm{O}}_{\rm{4}}}\)
4 \({\rm{A}}{{\rm{B}}_{\rm{2}}}{{\rm{O}}_{\rm{2}}}\)
CHXII01:THE SOLID STATE

318742 Assertion :
The number of spheres are equal to the number of octahedral void as well as tetrahedral void.
Reason :
Number of octahedral void \(=2 \times\) Number of tetrahedral void

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
CHXII01:THE SOLID STATE

318743 In a compound, \(\mathrm{n}\) atoms of element \(Y\) form ccp lattices and those of element \(X\) occupy \({\frac{{\rm{2}}}{{\rm{3}}}^{{\rm{rd}}}}\) of tetrahedral voids. The formula of the compound will be:

1 \(X_{2} Y\)
2 \(X_{3} Y_{4}\)
3 \(X_{4} Y_{3}\)
4 \(X_{2} Y_{3}\)
CHXII01:THE SOLID STATE

318739 A crystalline solid \(X Y_{3}\) has ccp arrangement for its element \(\mathrm{Y}\). \(\mathrm{X}\) occupies

1 \(66 \%\) of tetrahedral voids
2 \(33 \%\) of tetrahedral voids
3 \(66 \%\) of octahedral voids
4 \(33 \%\) of octahedral voids
CHXII01:THE SOLID STATE

318740 Consider a fcc lattice made of a metal cation \(\left(M^{6+}\right)\) and three oxide anions per unit cell. The resultant structure would have

1 3 D network of edge shared octahedra
2 3 D network of corner shared octahedra
3 2 D network of edge shared octahedra
4 2 D network of face shared octahedra
CHXII01:THE SOLID STATE

318741 Structure of a mixed oxide is cubic close-packed (ccp). The cubic unit cell of mixed oxide is composed of oxide ions. One-fourth of the tetrahedral voids are occupied by divalent metal A and the octahedral voids are occupied by a monovalent metal \(\mathrm{B}\). The formula of the oxide is

1 \(\mathrm{ABO}_{2}\)
2 \({{\rm{A}}_{\rm{2}}}{\rm{B}}{{\rm{O}}_{\rm{2}}}\)
3 \({{\rm{A}}_{\rm{2}}}{{\rm{B}}_{\rm{3}}}{{\rm{O}}_{\rm{4}}}\)
4 \({\rm{A}}{{\rm{B}}_{\rm{2}}}{{\rm{O}}_{\rm{2}}}\)
CHXII01:THE SOLID STATE

318742 Assertion :
The number of spheres are equal to the number of octahedral void as well as tetrahedral void.
Reason :
Number of octahedral void \(=2 \times\) Number of tetrahedral void

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
CHXII01:THE SOLID STATE

318743 In a compound, \(\mathrm{n}\) atoms of element \(Y\) form ccp lattices and those of element \(X\) occupy \({\frac{{\rm{2}}}{{\rm{3}}}^{{\rm{rd}}}}\) of tetrahedral voids. The formula of the compound will be:

1 \(X_{2} Y\)
2 \(X_{3} Y_{4}\)
3 \(X_{4} Y_{3}\)
4 \(X_{2} Y_{3}\)
CHXII01:THE SOLID STATE

318739 A crystalline solid \(X Y_{3}\) has ccp arrangement for its element \(\mathrm{Y}\). \(\mathrm{X}\) occupies

1 \(66 \%\) of tetrahedral voids
2 \(33 \%\) of tetrahedral voids
3 \(66 \%\) of octahedral voids
4 \(33 \%\) of octahedral voids
CHXII01:THE SOLID STATE

318740 Consider a fcc lattice made of a metal cation \(\left(M^{6+}\right)\) and three oxide anions per unit cell. The resultant structure would have

1 3 D network of edge shared octahedra
2 3 D network of corner shared octahedra
3 2 D network of edge shared octahedra
4 2 D network of face shared octahedra
CHXII01:THE SOLID STATE

318741 Structure of a mixed oxide is cubic close-packed (ccp). The cubic unit cell of mixed oxide is composed of oxide ions. One-fourth of the tetrahedral voids are occupied by divalent metal A and the octahedral voids are occupied by a monovalent metal \(\mathrm{B}\). The formula of the oxide is

1 \(\mathrm{ABO}_{2}\)
2 \({{\rm{A}}_{\rm{2}}}{\rm{B}}{{\rm{O}}_{\rm{2}}}\)
3 \({{\rm{A}}_{\rm{2}}}{{\rm{B}}_{\rm{3}}}{{\rm{O}}_{\rm{4}}}\)
4 \({\rm{A}}{{\rm{B}}_{\rm{2}}}{{\rm{O}}_{\rm{2}}}\)
CHXII01:THE SOLID STATE

318742 Assertion :
The number of spheres are equal to the number of octahedral void as well as tetrahedral void.
Reason :
Number of octahedral void \(=2 \times\) Number of tetrahedral void

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
CHXII01:THE SOLID STATE

318743 In a compound, \(\mathrm{n}\) atoms of element \(Y\) form ccp lattices and those of element \(X\) occupy \({\frac{{\rm{2}}}{{\rm{3}}}^{{\rm{rd}}}}\) of tetrahedral voids. The formula of the compound will be:

1 \(X_{2} Y\)
2 \(X_{3} Y_{4}\)
3 \(X_{4} Y_{3}\)
4 \(X_{2} Y_{3}\)
CHXII01:THE SOLID STATE

318739 A crystalline solid \(X Y_{3}\) has ccp arrangement for its element \(\mathrm{Y}\). \(\mathrm{X}\) occupies

1 \(66 \%\) of tetrahedral voids
2 \(33 \%\) of tetrahedral voids
3 \(66 \%\) of octahedral voids
4 \(33 \%\) of octahedral voids
CHXII01:THE SOLID STATE

318740 Consider a fcc lattice made of a metal cation \(\left(M^{6+}\right)\) and three oxide anions per unit cell. The resultant structure would have

1 3 D network of edge shared octahedra
2 3 D network of corner shared octahedra
3 2 D network of edge shared octahedra
4 2 D network of face shared octahedra
CHXII01:THE SOLID STATE

318741 Structure of a mixed oxide is cubic close-packed (ccp). The cubic unit cell of mixed oxide is composed of oxide ions. One-fourth of the tetrahedral voids are occupied by divalent metal A and the octahedral voids are occupied by a monovalent metal \(\mathrm{B}\). The formula of the oxide is

1 \(\mathrm{ABO}_{2}\)
2 \({{\rm{A}}_{\rm{2}}}{\rm{B}}{{\rm{O}}_{\rm{2}}}\)
3 \({{\rm{A}}_{\rm{2}}}{{\rm{B}}_{\rm{3}}}{{\rm{O}}_{\rm{4}}}\)
4 \({\rm{A}}{{\rm{B}}_{\rm{2}}}{{\rm{O}}_{\rm{2}}}\)
CHXII01:THE SOLID STATE

318742 Assertion :
The number of spheres are equal to the number of octahedral void as well as tetrahedral void.
Reason :
Number of octahedral void \(=2 \times\) Number of tetrahedral void

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
CHXII01:THE SOLID STATE

318743 In a compound, \(\mathrm{n}\) atoms of element \(Y\) form ccp lattices and those of element \(X\) occupy \({\frac{{\rm{2}}}{{\rm{3}}}^{{\rm{rd}}}}\) of tetrahedral voids. The formula of the compound will be:

1 \(X_{2} Y\)
2 \(X_{3} Y_{4}\)
3 \(X_{4} Y_{3}\)
4 \(X_{2} Y_{3}\)