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Types of Unit Cell

An octahedral...

Question

An octahedral void is present at each edge of the FCC lattice. How much of each of these voids belong to each unit cell?

A

One-eighth

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B

One-sixth

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C

One-fourth

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D

Half

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Solution

The correct option is C One-fourth
In a lattice, each edge is shared by four adjacent cubes. Hence, the octahedral voids present at these edges are actually divided among the four cells

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