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The co-ordination number of a metal crys...

The co-ordination number of a metal crystallising in a hexagonal close paced structure is :

A

12

B

4

C

8

D

6

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The correct Answer is:
A
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AAKASH SERIES-SOLID STATE-LEVEL - I (EXERCISE - I)
  1. Coordination number for Cu is

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  2. Which of the following is an example of body centred cube?

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  3. The co-ordination number of a metal crystallising in a hexagonal close...

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  4. An octahedral void is surrounded by how many spheres ?

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  5. How many Cl^(-) ions are there around Na^(+) ion in NaCl crystal

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  6. The void between two oppositly directed planar triangles of spheres in...

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  7. In a cubic close packed structure the number of nearest neighbours for...

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  8. Which of the following structure is most uncommon for metals ?

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  9. Which of the following packing is more efficient:

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  10. The packing efficiency in a simple cubic cell system of crystals is

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  11. The packing fraction for a body centred cube

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  12. Density of a crystal is given by :

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  13. The percent of void space in a body - centred cubic lattice is :

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  14. The packing efficiency in a simple cubic cell system of crystals is

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  15. The limiting radius ratio for tetrahedral shape is

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  16. AB is an ionic solid. If the ratio of ionic radii of A^(+) and B^(+) i...

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  17. For an octahedral arrangement the lowest radius ratio limit is

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  18. (A): Thermodynamically all solids possess a tendency to acquire defect...

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  19. At zero kelvin, most of the ionic crystals possess

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  20. In stoichiometric defects, the ratio of positive and negative ions as ...

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