The ionic radii of \( \mathrm{Rb}^{+} \)and \( \mathrm{I}^{-} \)are...

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The ionic radii of \( \mathrm{Rb}^{+} \)and \( \mathrm{I}^{-} \)are \( 1.46 \) and \( 2.16 \AA \). The most probable type of structure exhibited by it is
\( \mathrm{P} \)
(1) CsCl type
(2) \( \mathrm{NaCl} \) type
W.
(3) \( \mathrm{ZnS} \) type
(4) \( \mathrm{CaF}_{2} \) type
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