Point defects are present in

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(A) Point defects are irregularities or deviations from the ideal arrangement around a point or an atom in a crystalline substance. These defects are

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Ionic solids

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(A) Point defects are irregularities or deviations from the ideal arrangement around a point or an atom in a crystalline substance. These defects are primarily observed in $Ionic \ solids$ because they possess a regular,repeating lattice structure. Examples of point defects include stoichiometric defects (like $Schottky$ and $Frenkel$ defects),non-stoichiometric defects,and impurity defects.

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