Which is not the correct statement for ionic solids in which positive and negative ions are held by strong electrostatic attractive forces?
The radius ratio increases as coordination number increases
As the difference in size of ions increases coordination number increases
When coordination number is eight, the radius ratio lies between 0.225 to 0.414
In ionic solid of the type AX (ZnS, Wurtzite) the coordination number of Zn2+ and S2– respectively are 4 and 4