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The Solid State — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryThe Solid State1 Mark
MCQ
Schottky defect is observed in crystals when $.......$
  • A
    Some cations move from their lattice site to interstitial sites.
  • ✓
    Equal number of cations and anions are missing from the lattice.
  • C
    Some lattice sites are occupied by electrons.
  • D
    Some impurity is present in the lattice.
✓

Answer

Correct option: B.
Equal number of cations and anions are missing from the lattice.
 
Defect
Definition
Type of solid
Effect of defect on density of substance
Structure fo crystal $($with defect$)$
Schottky defect A crystal is said to have Schottky defect if equal number of cations and anions are missing from their normal lattice site there by creating vacancies or holes.
Ionic solid
 Decreases

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