Question

Which of the following statements is not true about the voids?

• A. Octahedral void is formed at the centre of six spheres which lie at the apices of a regular octahedron.
• B. There is one octahedral site for each sphere.
• C. There are two tetrahedral sites for each sphere.
• D. Octahedral voids are formed when the triangular voids in seconds layer exactly overlap with similar voids in the first layer.

Answer 1

Answer: (D)

Octahedral voids are formed when the triangular voids in seconds layer exactly overlap with similar voids in the first layer.

Answer 2

Octahedral sites are created by overlapping two equilateral triangle with Apices in opposite directions.