Why the defects of the crystalline solides are called thermodynamic de

1.	Why the defects of the crystalline solides are called thermodynamic defects ?
Answer» There is perfect arrangement of the constituent particels only at 0k , As the rtemperature increases (say upto room temperature ) , The chance that a lattice site may be unoccupied by an ion increases. As the number of defects increases with temperature ,the defects are called themodynamic defects.

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Why the defects of the crystalline solides are called thermodynamic defects ?

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