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Explain the following terms with suitable examples : ( a ) Schottky defect ( b ) Interstitial defect . |
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Answer» Solution :(a) Schottky defect : It occurs when equal number of vacant cations and ANION sites are found in LATTICE STRUCTURE . It decreases the density of the substance . For example : `NaCl and KCI` . (b) INTERSTITIAL defect : When some constituent particles (atoms or molecules or ions) occupy an interstitial site , the crystal is said to have interstitial defect . This defect INCREASES the density of the substance . Non - ionic solids show this detect. |
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