Question

shortest distance of octahedral void from the base layer A in ABCABC layer of hexagonal layers

Answer 1

Tetrahedral voids (THV) are present at    $\frac{\sqrt[a]{3} }{4}$ from body corner and octahedral voids are present at body center and edge centers.

d  THV⟶OHV =  $\frac{\sqrt[a]{3} }{4}$

​

Answer 2

Octahedral voids are present at edge centers and body centre.

Shortest distance between them is  $\frac{a}{\sqrt{2} }$

.

Explanation:

1.When the tetrahedral void are formed at the corners of six sphere, each octa hedral void generate two set of equilateral triangles which are opposite to each other are called octahedral voids.

2.Tetrahedral voids (THV) are present at  $\frac{\sqrt[a]{3} }{4}$   from body corner and octahedral voids are present at body center and edge centers.