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The space occupied by spheres in bcc arr...

The space occupied by spheres in bcc arrangement is 

A

`74%`

B

`70%`

C

`68%`

D

`60.4%`

Text Solution

Verified by Experts

The correct Answer is:
C
Space occupied = P acting `P.F=Zxx((4)/(3)pir^(3))/(a^(3))`
`2xx(4)/(3)pi((sqrt3a)/(4))^(3)`
For `BC C Z=2, P.F=(2xx(4)/(3)pi((sqrt3a)/(4))^(3))/(a^(3))xx100=0.68xx100=68%`
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AAKASH SERIES-SOLID STATE-LEVEL - II LECTURE SHEET (EXERCISE - I)
  1. If 'a' stands for the edge length of the cubic systems: simple cubic, ...

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  2. First three nearest neighbour distance for body centered cubic lattice...

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  3. The space occupied by spheres in bcc arrangement is

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  4. At very low temperature, oxygen O(2), freezes and forms a crystal. Whi...

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  5. For a solid with the following structure, the coordination number of t...

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  6. For the structure given below the site marked as S is a :

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  7. A solid A^(+)B^(-) has the B^(-) ions arranged as below. If the A^(+) ...

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  8. In FCC crystal, which of the following shaded planes contains the foll...

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  9. In the closest packing of atom B, the radius of atom A that can be fit...

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  10. Distance between tetrahedral void and octahedral void in the lattice w...

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  11. The two types of holes which occur in any close-packed structures are

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  12. In face centered cubic structure, the octahedral voids are located at ...

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  13. A non-stoichiometric compound Cu(1.8)S is formed due to incorporation ...

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  14. Consider following statements I: If three Fe^(2+) are missing from i...

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  15. The n-type semiconductor is obtained when Si is doped with

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  16. Superconductors are technologically and commercially important substan...

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  17. When ferromagnetic substances are heated strongly, its magnetic moment

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  18. Silica (SiO(2)) can be crystalline as well as amorphous, with followin...

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  19. In a face centred cubic arrangement of A and B atoms whose A atoms are...

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  20. Which of the following statements are false:

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