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NEET levelSingle correct optionDifficulty 1 of 3ss092

Which effect does a Schottky defect have on the density of an ionic crystal?

AThe density decreases
BThe density increases
CThe density does not change
DThe density first rises, then falls

Answer: A

A Schottky defect removes equal numbers of cations and anions from the lattice while the volume stays almost the same. The mass per unit volume therefore decreases.

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