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

Question

$\mathrm{Cu}^{2+}$ oxidises iodide to iodine

$\mathrm{Cu}^{2+}$ has much more negative hydration enthalpy

$\mathrm{Cu}^{2+}$ ion has smaller size.

iodide is bulky ion.

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