Which of the following having their radius ratio between 0.414 to 0.732 i.e for NaCl structure have their radius ratio not in this range but possess NaCl type structure 

Options

A. LiBr
B. KCl
C. RbCl
D. BaO

Answer

A, B, C, D

Explanation

For `NaCl(r_(+))/(r_(-))=0.414-0.732`, But radius for `LiBr, KCl, RbCl` and `BaO` are `0.24, 0.38, 0.77 and 0.83` respectively. Which are not in the range `0.414-0.732`