Does not exist because :

CHEMISTRY · Single correct · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry

Problem

\text{FeI}_3

does not exist because : (1) of large size (2)

\text{Fe}^{3+}

oxidises

\text{I}^-

\text{I}_2

(3) of low lattice energy (4) iodine is not highly electronegative enough to oxidise Fe to

\text{Fe}^{3+}