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Density

In a crystal ...

Question

In a crystal lattice the cation has left a lattice site and is located at an interstitial position, the lattice defect is

A

Interstitial defect

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B

Frenkel defect

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C

Valency defect

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D

Schottky defect

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Solution

The correct option is B Frenkel defect
When a cation, shifts from lattice to interstitial site, the defect is called Frenkel defect

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

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