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CBSE Class 12-science Answered

defects
Asked by Himanshu Tripathi | 02 Oct, 2013, 06:15: PM
Expert Answer
In AgBr, the Ag + ions (and corresponding Br - ions) are absent from the crystal lattice causing Schottky defects. However, Ag +ions are exceptionally mobile and they have a tendency to move about inside the lattice. So they complement the Schottky defects with Frenkel defects with the Ag+ ions trapped in interstitial spaces. This is because of the similar size of Ag + ions and Br - ions and the small size of Ag +ions and the fact that Ag + ions have a property to be mobile in the structure.
Answered by | 03 Oct, 2013, 09:06: AM
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