All Cu(II) halides are known except the iodide. The reason f... | CHEMISTRY - THE LANTHANOIDS | SolveeIt

All Cu(II) halides are known except the iodide. The reason for it is that

Iodide is bulky ion

$Cu^{2 +}$ oxidizes iodide to iodine

$Cu_{(aq)}^{2 +}$ has much more negative hydration enthalpy

$Cu^{2 +}$ ion has smaller size

Answer

$Cu^{2 +}$ oxidizes iodide to iodine

Explanation

$2Cu^{2 +} + 4I^{-} \rightarrow 2CuI_{2}$

The $CuI_{2}$ immediately decomposes to liberate $I_{2}$ ad insoluble copper (i) iodide

$2CuI_{2}\overset{\quad\quad}{\rightarrow}2CuI + I_{2}$

Question: All Cu(II) halides are known except the iodide. The reason for it is that...