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  • Match the defects given in Column I with the statements given in Column II.

Match the defects given in Column I with the statements given in Column II.

 

Column I Column II
(i) Simple vacancy defect (a) Shown by non-ionic solids and increases density of the solid
(ii) Simple interstitial defect (b) Shown by ionic solids and decreases density of the solid
(iii) Frenkel defect (c) Shown by non-ionic solids and density of the solids decreases.
(iv) Schottky defect (d) Shown by the ionic solids and density of the solid remains the same

 

Answers (1)

(i) -> (c); (ii) -> (a); (iii) ->(d); (iv) ->(b)

Vacancy defect occurs when some of the lattice sites are vacant resulting in decrease in density. In case of schottky defect, an equal number of cations and anions are missing from their normal lattice site by creating vacancies or holes.

In case of frenkel defect, the density remains same as the cation missing from the normal lattice position occupies interstitial site. Thus, maintaining the same density. In Interstitial defect, some of the constituent atoms occupy the interstitial site. Hence, no change in density.

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