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The packing efficiency in a simple cubic...

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

A

0.68

B

0.52

C

0.74

D

0.92

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The correct Answer is:
B
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The packing fraction in a simple cubic cell of crystals is :

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Packing fraction in a body - centred cubic cell of crystals is

The packing efficiency of simple cubic (sc.) body centred cubic (bcc) and cubic close packing (ccp) lattices follow the order

Which of the following lattices has the highest packing efficiency ? i) Simple cubic " " ii) Body- centred cubic " " iii) Hexagonal close-packed lattice Packing efficiency in i) Simple cubic lattice = 52.4 % ii) body-centred cubic lattice = 68 % iii) Hexagonal close-packed lattice = 74 %

The packing fraction of a simple cubic structure is pi//6 . Prove.

AAKASH SERIES-SOLID STATE-OBJECTIVE EXERCISE -1
  1. Which of the following structure is most uncommon for metals ?

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  2. Which of the following packing is more efficient:

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

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  4. The number of tetrahedral voids in the unit cell of a face-centred cub...

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  5. The Ca^(2+) and F ions are located in CaF( 2)crystal, respectively at ...

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  6. The fraction of the total volume occupied by the atoms present in a si...

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  7. In the structure given below, the sites S(1) and S(2) represent

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  8. The packing fraction for a body centred cube

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  9. Density of a crystal is given by :

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

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  11. Calculate the efficiency of the packaing in case of face - centered cu...

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  12. Coordination number for Cu is

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  13. Which of the following has hcp crystal structure ?

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  14. The intermetallic compound LiAg crystallizes in cubic lattice in which...

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  15. In a cubic closed packed structure of mixed oxide, the oxide ions are ...

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  16. Which of the following has both Schottky and Frenkel defects.

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  17. Due to Frenkel defect, the density of the ionic solids

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  18. The ratio of Fe^(3+) and Fe^(2+) ions in Fe(0.9)9S(1.0) is

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  19. Which of the following has Frenkel defect?

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  20. In AgBr, there can occur

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