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Frenkel defects are...

Frenkel defects are

A

Caused by doping process

B

Interstitial as well as point defects

C

Most common in salts with high limiting radius ratio

D

Stoichiometric defects

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The correct Answer is:
B, D
Frankel defect is also known are interstetial defect. It is an point defect & belongs to stoichometric defect.
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Ionic lattice has two major point defects, (1) Schottky (2) Frenkel defects, Schottky defects occurs due to the cation - anion pairs missing from the lattice sites, Frenkel defects occur when an ion leaves its lattice site and fits into an interstitial space. The neutrality of the crystals is being maintained and we considered all losses from interstitial postions Which defect decreases density of the crystal ?

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AAKASH SERIES-SOLID STATE-PRACTICE SHEET - 4
  1. Schottky defect does not causes

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  2. Which of the following having their radius ratio between 0.414 to 0.73...

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  3. Which of the following statements is or are true?

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  4. Schottkey defects -

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  5. Frenkel defects are

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  6. In alpha crystal with metal deficiency defect …………..

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  7. A metal adopts two allotropic forms with the following types of arrang...

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  8. A metal adopts two allotropic forms with the following types of arrang...

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  9. A metal adopts two allotropic forms with the following types of arrang...

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  10. Crystal defects give some important properties to solids. The defects ...

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  11. Crystal defects give some important properties to solids. The defects ...

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  12. When 'Na' vapour is blown over NaCl solid. The crystals attin yellow c...

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  13. Match the following : {:("COLUMN - I","COLUMN - II"),("A) 50% 'Td' v...

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  14. Match the following : {:("COLUMN - I","COLUMN - II"),("A) "I(2),"p) ...

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  15. If solid A^(+)B^(-) having ZnS Structure is heated so that the ions al...

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  16. The density of a crystal 'AB' with rock saltstructure is fund to be 5g...

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  17. A metal crystallizes in f.c.c. Then, the ratio of number of its first ...

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  18. In Fe(0.96)O, per one Avogadro number of oxide ions, x xx 10^(22) Avag...

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  19. Potassium crystallizes in a body centered cubic lattice. The approxima...

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  20. Compute the percentage void space per unit volume of unit cell in zinc...

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