Question

The correct statement for the molecule $Cs{I}_3$ is:

• A. It contains $C{s}^{3+}$ and $I^{-}$ ions
• B. It contains $C{s}^{+}$ and $I_3^{-}$ ions
• C. It contains $C{s}^{+}$, $I^{-}$ and lattice $I_2$ molecule
• D. It is a covalent molecule

Answer 1

The correct option is B It contains $C{s}^{+}$ and $I_3^{-}$ ions

${\mathrm{CsI}}_3\to {\mathrm{Cs}}^{+}+I_3^{-}$
It is an ionic compound.
$Cs$ cannot show +3 oxidation state.