Calculation of radius ratio for octahedral void in close packed lattice Chemistry Notes

Calculation of radius ratio for octahedral void in close packed lattice Chemistry Notes

→ Octahedral void is formed by connecting six anions, For understanding it, the transverse section of octahedral void is represented in figure 1.39. Four lattice points are shown to explain this.

Calculation of radius ratio for octahedral void in close packed lattice Chemistry Notes 1

→ Here ABC is right angle triangle, in which
r = Radius of void
R = Radius of cube

Calculation of radius ratio for octahedral void in close packed lattice Chemistry Notes 2

→ Hence, for getting place in octahedral void in neigbouring close packing lattice, the radius of cation should be 0.414 times of radius of anion.

Chemistry Notes