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In aclosed packed array of N spheres ,th...

In aclosed packed array of N spheres ,the octahedral holes are :

A

N/2

B

2N

C

4N

D

N

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The correct Answer is:
D
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OP TANDON-STATES OF MATTER (SOLID STATE)-OBJECTIVE QUESTIONS (LEVEL -A)
  1. What type of crystal defect is indicated in the diagram given below : ...

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  2. In a close packed array of N spheres, the number of tetrahedral holes ...

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  3. In aclosed packed array of N spheres ,the octahedral holes are :

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  4. AB crystallises in a bcc lattice with edge length qa equal to 387 pm.T...

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  5. Pure silicon doped with phosphorus is :

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  6. Which one has the highest melting point ?

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  7. For an ionic crystal of the formula AX and cooradition number 6, the v...

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  8. The Ca^(2+) and F^(-) ions arc located in CaF(2) crystal respectively ...

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  9. In the calcium fluoride structure, the coodination number of the catio...

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  10. The unit cell of a binary compound of A and B metals has a ccp structu...

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  11. The unit cell with crystallographic dimensions, a ne b ne c, alpha =ga...

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  12. Which of the following statement is not true about amorphous solids?

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  13. Which defect cause decrease in the density of crystal?

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  14. For tetrahedral coordination number, the radius ratio (r(c^(+)))/(r(a^...

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  15. What is the total number of ions present in one unit cell of sodium ch...

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  16. The formula for determination of density of cubic unit cell is :

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  17. The closeest-packing sequence ABAB….represents:

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  18. The ABC ABC type packing is called ……….. .

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  19. The edge length of face centred cubic cell of an ionic substance is 5...

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  20. Close packing is maximum in the crystal lattice of :

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