frenkel defect is not found in (a) AgBr (b) CsBr (c) Agl (d) ZnS
Answers
Answer:
Frenkel Defect is not found in CsBr.
Explanation:
Frenkel Defect : If an ion is missing from its Lattice site causing a vacancy or a hole there and occupies an interstitial site so that the electrical neutrality as well as stoichiometry of a compound is maintain, this type of defect is known as frenkel defect.
Since, The Size of cation is generally smaller, it is more likely that cations occupy interstitial site.
"Effect of Frenkel defect"
1. the type of defect is present in those compound which have low coordination number.
2. Large Difference in size of anion and cation.
3. solids with the defect conduct electricity to smallest extent.
4. The dielectric constant of Crystal increases.
5.The density of solid is unchanged.
6. Due to presence of holes the stability of the Crystal decreases.!
Answer:
➡ Frenkel defect is not found in CsBr.
Explanation:
➡ Frenkel defect:- frankel defect is found in ionic solid. When small positive ion move away it's fundamental place and set In Interstitial place, Space defect create on fundamental place and frenkal defect on Interstitial place.
➡ Frenkel defect also known as dislocation defect. There only changing places of Particles,not change in density.
➡ We can show frenkel defect in ionic substance's where is a big difference in the size of the positive ion and nagetive ions.
➡ Ex. ZnS, AgCl, AgBr, AgI.
➡ Reason is small size of Zn+ And Ag+.
➡ frenkal defect found in positive Ions who have lower Serial number.
➡ Material which gives frankel defect is also electrically Neutral.