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 second layer exactly overlap with similar voids in the first layer

Answer 1

Answer: (D)

Octahedral sites are created by overlapping two equilateral triangles with apices in opposite directions.