1. Tardigrade
  2. Question
  3. Chemistry
  4. The ionic radii of Rb+ and I- are 1.46 and 2.16 mathringA. The most probable type of structure exhibited by it is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The ionic radii of $Rb^+$ and $I^-$ are $1.46$ and $2.16 \, \mathring{A}$. The most probable type of structure exhibited by it is

The Solid State

Solution:

Radius ratio $\frac{r_{Rb^+}}{r_{I^-}} = \frac{1.46}{2.16} = 0.68$
$\Rightarrow $ Between $0.414$ and $0.732$
Hence rock salt $(NaCl)$ structure.