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Asked Jan 4, 2020
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Describe the difference between body-centered cubic and facecentered cubic structures.

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Expert Answer

Step 1

The difference between body centered cubic and face centered cubic structures are given in the below table.

Step 2

Basis of difference

Body centered cubic

Face centered cubic

Co-ordination number

8

12

Packing efficiency

68%

74%

Number of atoms per unit cell

2 ( one in body center and 8 at each corner contributing 1/8th)

4 ( one at each face center contributing half and 8 at each corner contributing 1/8th)

Tetrahedral and octahedral voids

No regular voids

8 and 4

Step 3

The structures are given ...

Chemistry homework question answer, step 3, image 1
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