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What is the effect of presence of Schottky and frenkal defect on the newtrality and stoichiometry of crystalline solid

What is the effect of presence of Schottky and frenkal defect on the newtrality and stoichiometry of crystalline solid
 

Grade:12

1 Answers

Arun
25750 Points
5 years ago
Dear Lavit
 
Consequences of Schottky defect
1. As the number of ions decreases as a result of this defect, the mass decreases whereas the volume remains the same. Hence density of the solid decreases
2. The crystal begins to conduct electricity to a small extent by ionic mechanism
3. The presence of too many voids lowers lattice energy and the stability of the crystal
Consequences of Frenkel defect
1. As no ions are missing from the crystal lattice as a whole, therefore density of the solid remains the same
2. The closeness of like charges tends to increases the dielectric constant of the crystal
3. The crystal conducts electricity to a small extent by ionic mechanism
 
 
Regards
Arun

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