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In an ionic compound A+X', the radii of ...

In an ionic compound A+X', the radii of `A^(+)` and X ions are 1.0 pm and 2.0 pm respecti­vely. The volume of the unit cell of the crystal AX will be

A

27 `"pm"^(3)`

B

64 `"pm"^(3)`

C

125 `"pm"^(3)`

D

21 `"pm"^(3)`

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The correct Answer is:
D
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AAKASH SERIES-SOLID STATE-OBJECTIVE EXERCISE -1
  1. Total number of Bravais lattices is

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

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

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

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  5. Among the following highest melting point is associated with

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

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

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

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

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

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

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

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

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

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

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

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  18. Which of the following packing is more efficient:

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

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

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