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In the cubic close packing, the unit cel...

In the cubic close packing, the unit cell has-

A

4 tetrahedral voids each of which is shared by four adjacent unit cells

B

4 tetrahedral voids within the unit cell

C

8 tetrahedral voids each of the which is shared by four adjacent unit cells

D

8 tetrahedral voids within the unit cells

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The correct Answer is:
D
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Structure of a mixed oxide is cubic close packed 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 monvalent metal B . The formula of the oxide is :

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If 'Z' is the number of atoms in the unit cell that represents the closest packing sequence…… ABCABC ….. The number of octahedral voids in the unit cell is equal

Packing refers to the arrangement of constituent units in such a way that the forces of attraction among the constituent particles is the maximum and the contituents occupy the maximum available space. In two dimensions, there are hexagonal close packing and cubic close packing. In three dimentions, there are hexagonal, cubic as well as body centred close packings. The empty space left in ccp packing is:

Packing refers to the arrangement of constituent units in such a way that the forces of attraction among the constituent particles is the maximum and the contituents occupy the maximum available space. In two dimensions, there are hexagonal close packing and cubic close packing. In three dimentions, there are hexagonal, cubic as well as body centred close packings. The space occupied by spheres in bcc arrangement is:

Packing refers to the arrangement of constituent units in such a way that the forces of attraction among the constituent particles is the maximum and the contituents occupy the maximum available space. In two dimensions, there are hexagonal close packing and cubic close packing. In three dimentions, there are hexagonal, cubic as well as body centred close packings. The pattern of successive layers in ccp arrangement is:

Assertion(A) : Total number of octahedral voids present in unit cell of cubic close packing including the one that is present at the body centre, is four. Reason ( R) : Besides the body centre there is one octahedral void present at the centre of each of the six faces of the unit cell and each of which is shared between two adjacent unit cells.

Packing refers to the arrangement of constituent units in such a way that the forces of attraction among the constituent particles is the maximum and the contituents occupy the maximum available space. In two dimensions, there are hexagonal close packing and cubic close packing. In three dimentions, there are hexagonal, cubic as well as body centred close packings. A certain oxide of a metal M crystallises in such a way that O^(2-) ions occupy hcp arrangement following ABAB... pattern. The metal ions however occupy 2//3 rd of the octahedral voids. The formula of the compound is :

How much portion of a corner particle of cubic unit cell does lie within the unit cell? Give reason.

CHHAYA PUBLICATION-SOLID STATE-SOLVED NCERT EXEMPLAR PROBLEMS
  1. The correct order of the packing efficiency in different types of unit...

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  2. Which of the following defects is also known as dislocation defect-

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  3. In the cubic close packing, the unit cell has-

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  4. The edge lengths of the unit cells in terms of the radius of spheres c...

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  5. Which of the following represents correct order of conductivity in sol...

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  6. Which is not true about the voids formed in three dimensional hexagona...

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  7. The value of magnetic moment is zero in the case of anti-ferromagnetic...

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  8. Which of the following statements are not true-

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  9. Which of the following are true about metals-

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  10. Under the influence of electric field, which of the following statemen...

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  11. Which of the following statements are true about semiconductors-

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  12. An excess of potassium ions makes KCl crystal appear violet or lilac i...

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  13. No. of tetrahedral voids per unit cell in NaCl crystal is-

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  14. Amorphous solid can also be called-

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  15. A perfect crystal of silicon is doped with some elements as given in t...

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  16. Which of the following statements are correct-

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  17. Which of the features are not shown by quartz glass-

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  18. Which cannot be regarded as molecular solid-

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  19. In which of the following arrangements octahedral voids are formed-

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  20. Frenkel defect is also known as-

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