lonic lattice has two major points defects, (1) Schottky (2) Frenkel defects Schottky defects occurs due to the cation-anion pair's missing from the lattice sites. Frenkel defects occurs when an ion leaves its lattice site and fits into an interstitial space. The neutrality of the crystal is being maintained and we considered all losses from interstitial positions

Which defect decreases density of the crystal?

• A

  Frenkel defect

• B

  Schottky defect

• C

  excess metal defect

• D

  interstitial defect

Structure shown here represents: 

• A

  Schottky defect

• B

  Frenkel defect

• C

  Metal excess defect

• D

  None of these 

Structure shown here represents:

• A

  Schottky defect

• B

  Frenkel defect 

• C

  vaccancy defect

• D

  metal excess defect

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