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Question
Which defect causes decrease in the density of crystal?
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Solution
The correct option is B Schottky
Schottky defect arises due to a vacancies at cation sites and equal number of vacancies at anion sites due to which in the same unit cell, number of ions decrease. Therefore, mass of unit cell decreases but volume remains the same and thus, density decreases.
Schottky defect arises due to a vacancies at cation sites and equal number of vacancies at anion sites due to which in the same unit cell, number of ions decrease. Therefore, mass of unit cell decreases but volume remains the same and thus, density decreases.
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