If the radius of $Cs^{+}$ is $169\;pm$ and that of $Cl^{-}$ is $181\;pm$ , predict the structure of $CsCl$. What is the coordination number of $Cs^{+}$ ion ?

Question

$\begin{array}{1 1} 103.5 \\ 0.94 \\ 8.4 \\ 9.5 \end{array} $