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If 'a' stands for the edge length of the...

If 'a' stands for the edge length of the cubic systems: simple cubic, body centered cubic and face centred cubic, then the ratio of radii of the spheres in these systems will be respectively. 2. 

A

`1/2a:sqrt(3)/(4)a:(1)/(2sqrt(2))a`

B

`1/2a:sqrt(3a):(1)/(2sqrt(2))a`

C

`1/2a:sqrt(3)/(2)a:sqrt(2)/(2)a`

D

`(1)/sqrt(3)a:sqrt(2a):sqrt(3)/(2)a`

Text Solution

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A
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AAKASH SERIES-SOLID STATE-OBJECTIVE EXERCISE -1
  1. The total number of crystal forms possible is around

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  2. Total number of Bravais lattices is

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  3. If 'a' stands for the edge length of the cubic systems: simple cubic, ...

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  4. In an ionic compound A+X', the radii of A^(+) and X ions are 1.0 pm an...

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  5. Total volume of atoms present in a face centered cubic unit cell of a ...

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  6. Among the following highest melting point is associated with

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  7. The number of space lattices possible for the crystalographic dimensio...

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  8. In which of the following crystal systems F.C.C unit cells exists ?

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  9. Which one of the following relationships is correct for cubic (C) and ...

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  10. In F.C.C the unit cell is shared equally by how many unit cells ?

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  12. In a close packed lattice containing 'n' particles, the number of tetr...

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

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

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

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

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

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

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  19. Which of the following packing is more efficient:

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

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