What is meant by packing efficiency ? How is it measured ? – InterviewSolution

1.	What is meant by packing efficiency ? How is it measured ?
Answer» Solution :(i) There is some free space between the spheres of a single layer and the spheres of SUCCESSIVE layers. (ii) The percentage of total volume OCCUPIED by these constituent spheres GIVES the packing EFFICIENCY of an arrangement. For EG., in simple cubic arrangement. `"Packing fraction (or) efficiency" =("Total volume occupied by spheres in unit cell")/("volume of the unit cell")xx100`

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