Answer to Question #214651 in Inorganic Chemistry for Alia

Question #214651

A crystalline solid is composed of the elements 'A' and 'B.' A atoms are present at the corners, while B atoms are present at the face centers. However, one atom of A is missing from one of the corner points. What type of crystal defect is this, and how does it happen? What happens to the density of this solid material?


1
Expert's answer
2021-07-07T05:07:53-0400

Atoms adjacent to a vacancy are less restrained than those which are completely surrounded by the atoms and thus, can vibrate more randomly. Each vacancy contributes a small amount of vibrational entropy to the total entropy of the crystal.


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