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The ratio of cationic radius to anionic...

The ratio of cationic radius to anionic radius in an ionic crystal is greater than `0.732` its coordination number is

A

1

B

4

C

6

D

8

Text Solution

Verified by Experts

The correct Answer is:
D
When radius ratio is in between `0.723 - 1.000`, then coordination number is 8 and the structural arrangement is body centred cubic .
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NIKITA PUBLICATION-SOLID STATE -Multiple Choice Questions (III. PACKING OF CONSTITUENT PARTICLES, RADIUS RATIO )
  1. Which one of the following is not a close packing ?

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  2. The coordination number of each atom in body centered cubic unit cell...

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  3. the number of tetrahedral voids per unit cell in NaCl crystal is ...

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  4. What is the coordination number of sodium ions in the case of sodium c...

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  5. The cordination number of a metal crystallising in a hexagonal close-p...

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  6. In which of the following crystals, alternate tetrahedral voids are oc...

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  7. Which of the following statements is not true about NaCl struture ?

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  8. Which of the following statements is not true about NaCl structure?

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

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  10. A metallic crystal cystallizes into a lattice containing a sequence of...

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  11. In A^(+)B^(-) ionic compound radii of A^(=) and B^(-) ions are 180 "pm...

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  12. For cubic - coordination the value of ratio is

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  13. If the ratio is in the range of 0.414- 0.732 , then the coordination n...

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  14. The empty space availablein scc crystal lattice is

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  15. The ratio of cationic radius to anionic radius in an ionic crystal i...

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  16. Hexagonal closet packed arrangement of equal -sized spheres is describ...

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  17. If the value of ionic radius ratio ((r(c ))/(r(a))) is 0.52 in an ioni...

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  18. Each unit cell of NaCl consists of 13Cl6(-) ions and

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  19. At the limiting value of radius ratio r(+)//r(-)

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  20. The radius ratio of the cation to the anion of an ionic compound is 0....

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