Solid StateHard
Question
The ionic radii of Rb+ and I- are 1.46 and 2.16 (Ao). The most probable type of structure exhibited by it is
Options
A.CsCI type
B.NaCl type
C.ZnS type
D.CaF2 type
Solution
Radius Ratio 
= 0.68
⇒ between 0.414 & 0.732
Hence Rock salt (NaCl) structure.
= 0.68⇒ between 0.414 & 0.732
Hence Rock salt (NaCl) structure.
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