Question

The radius of cation and anion is $0.95A^0$ and $1.81A^0$. Name of structure of ionic crystal.

Answer 1

We know,

$Radiusratio=\frac{Radiusofcation}{Radiusofanion}$

$Radiusratio=\frac{0.95}{1.81}=0.525$

For the ratio of 0.414 to 0.732, the ionic crystal has octahedral structure

So, structure is octahedral.