Schottky defect: true or false statement about the density of the crystal

1. A.
   After defect stoichiometry, the crystal remains unchanged.
2. B.
   After defect neutrality, the crystal's structure remains unchanged.
3. C.
   After defect density of crystal remains unchanged
4. D.
   It is a vacancy defect.

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1. A.
   The density of a substance decreases.
2. B.
   The electrical neutrality of the substance changes.
3. C.
   It is found in ionic compounds with larger difference between sizes of cation and anion.
4. D.
   It develops when smaller cations occupy interstial sites from their normal sites.

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