Ncert Exercises & Solutions

In which of the following arrangements octahedral voids are formed?

(a) HCP

(b) BCC

(d) FCC

The correct choice among the above is -

1. (a, b)

2. (b, c)

3. (c, d)

4. (a, d)

Hint: In HCP and FCC octahedral voids are formed

In HCP and FCC arrangements octahedral voids are formed. In FCC, the octahedral voids are observed at the edge and centre of

the cube while in BCC and simple cubic, no octahedral voids are observed.