Question

Which halide is least stable and has doubtful existence ?

• A. $C{I}_4$
• B. $Ge{I}_4$
• C. $Sn{I}_4$
• D. $Pb{I}_4$

Answer 1

The correct option is D $Pb{I}_4$

In nature $P{b}^{4+}$ is strong oxidant and $I^{-}$ is strong reductant.
Hence $Pb{I}_4$ cannot exist.