Home
Class 12
CHEMISTRY
Which has Frenkel defect ?...

Which has Frenkel defect ?

A

Sodium chloride

B

Graphite

C

Silver bromide

D

Diamond

Text Solution

AI Generated Solution

The correct Answer is:
To determine which compound exhibits a Frenkel defect, we need to understand the characteristics of a Frenkel defect and analyze the given options accordingly. ### Step-by-Step Solution: 1. **Understanding Frenkel Defect**: - A Frenkel defect occurs when a smaller cation is displaced from its lattice site to an interstitial site within the crystal structure. This defect typically involves ions of different sizes, where the cation is smaller than the anion. 2. **Analyzing the Options**: - **Option A: Sodium Chloride (NaCl)**: - In NaCl, the size of the sodium ion (Na⁺) is comparable to the size of the chloride ion (Cl⁻). Therefore, NaCl does not exhibit a Frenkel defect; it typically shows a Schottky defect instead. - **Option B: Graphite**: - Graphite is a covalent network solid composed of carbon atoms. It does not have ionic character and thus does not exhibit Frenkel defects. - **Option C: Silver Bromide (AgBr)**: - In AgBr, the size of the silver ion (Ag⁺) is smaller than that of the bromide ion (Br⁻). This size difference allows Ag⁺ to be displaced to an interstitial site, making AgBr a candidate for exhibiting a Frenkel defect. - **Option D: Diamond**: - Diamond is also a covalent network solid and does not contain ionic defects like Frenkel defects. Therefore, it cannot exhibit a Frenkel defect. 3. **Conclusion**: - Based on the analysis, the only compound that exhibits a Frenkel defect is **Silver Bromide (AgBr)**. ### Final Answer: **C: Silver Bromide (AgBr)** exhibits a Frenkel defect.
To determine which compound exhibits a Frenkel defect, we need to understand the characteristics of a Frenkel defect and analyze the given options accordingly. ### Step-by-Step Solution: 1. **Understanding Frenkel Defect**: - A Frenkel defect occurs when a smaller cation is displaced from its lattice site to an interstitial site within the crystal structure. This defect typically involves ions of different sizes, where the cation is smaller than the anion. 2. **Analyzing the Options**: ...
Promotional Banner

Similar Questions

Explore conceptually related problems

Which of the following has Frenkel defect?

Which one of the following compounds can show Frenkel defect ?

Why does Frenkel defect not change the density of AgCl crystals?

Why is Frenkel defect not found in pure alkali metal halides ?

Why is Frenkel defect not found in pure alkali metal halides ?

Give reason : (a) Why is Frenkel defect found in AgCl ? (b) What is the difference between silicon doped with phosphorus and doped with gallium semi-conductors ?

Due of Frenkel defect

Assertion:Frenkel defect is also called dislocation defect Reason:Frenkel defect is shown by ionic substances in which cation and anion are of almost similar sizes.

Out of NaCl and AgCl, which one shows Frenkel defect and why ?

Defects are basically irregularities in the arrangement of constituent particles. Broadly speaking the defects are of two types. Namely point defects and line defects. Point defects: The irregularities or deviations from ideal arrangement around a point or an atom in the crystalline substance. Line defects : The irregularities or deviations from ideal arrangement in enitre row of lattice points. Answer the following questions. Select the correct statements : (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 alos called dislocation defect. (iv) Silver halide shows Frenkel defect.