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Position of octahedral voids in fcc stru...

Position of octahedral voids in fcc structure is//are

A

A simple triangular void is surrounded by four spheres

B

A bi - triangular void is surrounded by four spheres

C

a bi - triangular void is surrounded by six spheres

D

a bi - triangular void is surrounded by eight spheres

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The correct Answer is:
C
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TARGET PUBLICATION-SOLID STATE-QUESTION
  1. In a close packed array of N spheres, the number of tetrahedral holes ...

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  2. the number of tetrahedral voids per unit cell in NaCl crystal is ...

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  3. Position of octahedral voids in fcc structure is//are

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  4. The coordination number in hcp is

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  5. The packing efficiency of a two-dimensional square unit cell shown bel...

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  6. The space occupied by b.c.c. arrangement is approximately

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  7. The maximum percentage of available volume that can be filled in a fac...

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  8. A solid is made of two element X and Y .The atoms Z are in C CP arrang...

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  9. A solide A^(+)B^(-) has the B^(-) ions arranged as below. If the A^(+)...

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  10. IF the radius ratio of cation to anion is in the range of 0.2...

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  11. For tetrahedral co-ordination the radius ratio (r^(+) //r^(-))should b...

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  12. For cubic - coordination the value of ratio is

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  13. In CsCI lattice the coordination number of Cs ion is

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  14. In NaCl lattice , the radius ratio is [ Given : r(Na^(+))=0.95 ...

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  15. For some crystals , the radius ratio for cation and anion is 0.525 its...

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  16. How many chloride ions are there around sodium ion in sodium chloride ...

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  17. MgO has a structure of NaCl and TiCl has the structure of CsCl. What a...

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  18. For an ionic crystan of the type AB , the value of (limiting) earius r...

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  19. Define Frenkel and Schottky defects with examples.

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  20. Which has Frenkel defect ?

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