TS EAMCET · Chemistry · Solid State

Identify the correct statement about the crystal defects in solids,

A Frenkel defect is favoured when the difference between sizes of cation and anion is very small
B Frenkel defect is not a dislocation effect
C Schottky defects have no effect on physical properties of solids
D Trapping of electrons in lattice leads to the formation of F-centres

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Answer & Solution

Correct Answer

(D) Trapping of electrons in lattice leads to the formation of F-centres

Step-by-step Solution

Detailed explanation

Trapping of electrons in Lattice leads to the formation of F - centres. 1- Frenkel defect is favoured when the difference between size of cation and anion is larger. 2- Frenkel defect is also called dislocation defect. 3- Schottky defect have effect on phyṣical properties o?…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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