How does the density of a crystal change in S | vedclass

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(A) In $Schottky$ defect,equal numbers of cations and anions are missing from their lattice sites,which leads to a decrease in the mass of the crystal

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Density decreases in Schottky defect and remains unchanged in Frenkel defect.

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(A) In $Schottky$ defect,equal numbers of cations and anions are missing from their lattice sites,which leads to a decrease in the mass of the crystal while the volume remains constant. Thus,the density of the crystal decreases. In $Frenkel$ defect,ions (usually cations) leave their lattice sites and occupy interstitial sites. Since no ions leave the crystal,the mass and volume remain unchanged. Thus,the density of the crystal remains unchanged.

How does the density of a crystal change in Schottky defect and Frenkel defect?

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