Question

What is the radius ratio value of a compound with co-ordination number $4$ having square planar geometry and co-ordination number $6$ having octahedral geometry is same?

Answer 1

According to radius ratio rule,

For co-ordination no 4 ratio is between $0.225-0.414$

For co-ordination no 6 ratio is between $0.414-0.732$

For a radius ratio of exactly $0.414$ we have a compound with co-ordination number 4 having square planar geometry and co-ordination number 6 having octahedral geometry.