Question

Cations are present in the interstitial sites in _______.
(A) Frenkel defect
(B) Schottky defect
(C) vacancy defect
(D) metal deficiency defect

Answer 1

Any take off from an entirely requested plan of constituent particles in precious stone is called defect. The two kinds of defects are point defect and line defect. Frenkel defects are not found in unadulterated soluble base metal halides on the grounds that the cations because of bigger size can't get into the interstitial destinations.

Complete Step By Step Solution:
A Frenkel defect or separation defect is a sort of defect in glasslike solids wherein an iota is uprooted from its grid position to an interstitial site, making an opening at the first site and an interstitial defect at the new area with no adjustments in compound properties.
In this defect, the cation is displaced from its cross-section site to an interstitial site. This defect happens just when cations are more modest when contrasted with the anions. There are likewise no adjustments in synthetic properties. There is additionally no critical effect of Frenkel defect on the thickness of the strong and accordingly both the volume and mass of the strong is saved. In such cases, substances likewise keep up their electrical non-partisanship.
Consequently, Choice "A" is the right answer.

Additional Information:
A Frenkel defect or disengagement defect is a sort of point defect in glasslike solids named after its pioneer Yakov Frenkel. The defect structures when an iota or more modest particle (normally cation) leaves its position in the cross section, making an opening, and turns into an interstitial by housing in a close by location. In basic frameworks, they are principally created during molecule illumination, as their development enthalpy is commonly a lot higher than for other point abandons, for example, opportunities, and subsequently their balance focus as indicated by the Boltzmann appropriation is underneath the discovery limit.

Note:
Despite the fact that Frenkel absconds include just the movement of the particles inside the precious stone, the complete volume and accordingly the thickness isn't really rationed: specifically, for close-stuffed frameworks, the cross-section extension because of the strains instigated by the interstitial molecule commonly rules over the grid constriction because of the opportunity, prompting a lessening of thickness.