Question

Define the following :

(i) Schottky defect
(ii) Frenkel defect
[ jee mains 2018 ]​

Answer 1

⌬ Schottky defect :

• ➮ If in an ionic crystal of type A B , equal number of cations and anions are missing from their lattice sites so that the electrical neutrality is maintained, it is called Schottky defect.

⌬ Frenkel defect :

• ➮ If an ion leaves its site from its lattice site and occupies the interstitial site and maintains electrical neutrality, then it is called Frenkel defect.

❒ Note :

• ⪼ For diagram of schottky and Frenkel defects Refer to attachment Given!

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Answer 2

Explanation:

Schottky deSchottky defect

(ii) Frenkel defefect

(ii) Frenkel Schottky defect

(ii) Frenkel defeSchottky defect

(ii) Frenkel defedefSchottky defect

(ii) Frenkel defee