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How are tetrahedral and octahedral voids formed? - Chemistry

Answer in Brief

How are tetrahedral and octahedral voids formed?

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Solution

  1. Two dimensional hexagonal close-packed layer has triangular voids which is formed by three spheres.
  2. When the triangular voids of the first layer are covered by spheres of the next layer, tetrahedral voids are formed. A tetrahedral void is surrounded by four spheres.
  3. The overlapping triangular voids from the two layers together form an octahedral void.
    An octahedral void is surrounded by six spheres.
  4. Thus, the depressions in which spheres of second layer rest are tetrahedral voids while the depressions in which no sphere rests are octahedral voids.

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APPEARS IN

Balbharati Chemistry 12th Standard HSC Maharashtra State Board
Chapter 1 Solid State
Exercise | Q 7 | Page 27
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