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An ionic defect involves the migration of the ions within a crystal. It can affect the density and volume of the crystals.
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Why AgBr shows both frenkel and schotky defect?
When the both the cations and anions are absent from the crystal lattice it is called Schottky defect. This defect is shown when the anions and cations have comparable size. The Frenkel defect is shown by ionic molecules when their is a large difference in the size of anions and cations. The smaller anions are very much mobile and they occupy interstitial site. AgBr has cations and anions with comparable size and hence it shows Schottky defect but the Ag+ ion is very much mobile and it easily occupies interstitial place getting dislocated from its original place, that's why the ionic crystal AgBr shows both Schottky and Frenkel defects.
Name the type of point defect that occurs in a crystal of zinc sulphide?
A common type of point defect that occurs in a crystal of zinc sulphide is a vacancy defect. In this defect, an atom is missing from its lattice position, creating a gap or a vacancy in the crystal structure.
Is FeSO4 a ionic or covalent bond?
It is ionic
What kind of bond is FeO?
IONIC BOND
Is K2O an ionic bond or a covalent bond?
A ionic bond formed by,the cations,2K +and the anion,O 2-K2O===== Potassium oxide
What is the effect of frenkel schottky defect on elictrical conductivity?
Both Frenkel and Schotty defects improve the electrical conductivity of an ionic crystal.
Why AgBr shows both frenkel and schotky defect?
When the both the cations and anions are absent from the crystal lattice it is called Schottky defect. This defect is shown when the anions and cations have comparable size. The Frenkel defect is shown by ionic molecules when their is a large difference in the size of anions and cations. The smaller anions are very much mobile and they occupy interstitial site. AgBr has cations and anions with comparable size and hence it shows Schottky defect but the Ag+ ion is very much mobile and it easily occupies interstitial place getting dislocated from its original place, that's why the ionic crystal AgBr shows both Schottky and Frenkel defects.
Why does the schottky defect decrease the densit of a solid?
The defect forms when oppositely charged ions leave their lattice sites, creating vacancies. These vacancies are formed in stoichiometric units, to maintain an overall neutral charge in the ionic solid. The vacancies are then free to move about as their own entities. Normally these defects will lead to a decrease in the density of the crystal.
What is the difference between Defect and Defective?
A defective product has a defect: "My phone is defective" "What defect does it have?" "The defect is that the screen is broken" To defect can also mean to switch sides e.g. from an army or a political party
How do you overcome the building defect?
Depends, what defect?
Can the software be defect free?
no it cant be defect abundantly
Does a platypus have a growth defect?
No. The platypus does not have a growth defect.
Is a phobia a health defect?
it is a mental health defect.
What is defect seepage in IT?
Defect Seepage is the defect creepage from one module to other or from one phase to subsequent phases.
What is difference between shotkey defect and frankel defect?
1).schottky defect arises due to departue of ions (both cation and anion in equal ratio) from crystal lattice leaving holes that favour conductivity. The equal no of ions depart because to maintain the electrical neutrality of crystal. It was discovered by walter.H schottky in 1930. But in frenkel defect ions(cations) are missing from there normal lattice site and occupying an interstitial site between the lattice points. They dont depart from crystal lattice. Because no departure occure so crystal remain electrically neutral. It was discovered by Yakov frenkel in 1926. 2) schottky defect is only vacancy defect but frenkel defect is vacancy as well as interstitial defect. 3). Schottky defect decreases density and strength of the crystal. But frenkel defect doesnt affect density. 4).schottky defect is shown by the ionic solids having high coordination no and approx. same size of cation and anion(i.e r+ve/r-ve approaches to 1) While frenkel defect is shown by the compound having low coordination no and size of anion larger than cation(i.e r+ve/r-ve approches the minimum value). By Sandeep Singh Lingwal Srinagar, Uttrakhand
What is defect cascading?
Defect cascading explains how one defect leads to other defects. For Example, employee application salary calculations are not correct when totaling Basic, Tax and Gross, so for this issue defect raised. In this case other modules will block and also same defect will exists in all those modules due to this defect. This is called Defect Cascading.
What is difference between damage and defect?
The difference between damage and defect is damage is when an item is broken or destroyed. A defect is usually a mechanical defect that prevents an item from working correctly.
