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Examine the defective crystal given belo...

Examine the defective crystal given below and answer the question that follows :

State if the above defect is stoichiometric or non-stoichiometric. How does this defect affect the density of the crystal ? Also, write the term used for this type of defect.

Text Solution

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In the given crystal equal number of cations and anions are missing, hence this defect is stoichiometric defect. As the ions are missing from the crystal it is a vacancy defect and decreases the density of the crystal. This defect is known as Schottky defect.
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