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The Solid State

Question
CBSEENCH12005441

What is meant by octahedral void in a close-packed structure?

Solution
If a triangular void pointing up in one close-packed layer is covered by a triangular void pointing down in the adjacent layer, then a void surrounded by six spheres results Such a void is called an octahedral void since the six spheres surrounding it lie at the corners of a regular octahedron.

                    octahedral void