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Frenkel Defect

Cations are p...

Question

Cations are present in the interstitial sites in ...........

(a) Frenkel defect (b) Schottky defect

(c) vacancy defect (d) metal deficiency defect

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Solution

Answer: (a) Frenkel defect

When smaller ion (usually cation) is dislocated from its normal site in crystal and move to the interstitial site is known as Frenkel defect as shown below

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Similar questions

Which of the following defects decrase the density ?

(a) Interstitial defect (b) Vacancy defect

(c) Frenkel defect(d) Schottky defect

Q. (i) Frenkel defect create a vacancy defect at its original site and an interstitial defect at its new position.
(ii) Frenkel defect is stoichiometric point defect.
(iii) Frenkel defect is also called dislocation defect.
(iv) Silver halide shows Frenkel defect
Select the correct statements :

Q. Which of the following points defects are shown by

A g B r_{(s)}

crystals?
(I) Schottky defect
(II) Frenkel defect
(III) Metal defect
(IV) Metal deficiency defect

Ionic lattice has two major points defects, (1) Schottky (2) Frenkel defects. Schottky defects occur due to the cation-anion pair's missing from the lattice sites. Frenkel defects occur when an ion leaves its lattice site and fits into interstitial space. The neutrality of the crystal is being maintained and we considered all losses from interstitial positions.

The structure is shown here represents :

Match the following

1-a,2-b,3-a,4-b
1-a,2-a,3-a,4-a
1-a,2-c,3-a,4-b
1-b,2-b,3-a,4-b

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