Final answer:
The valence bond theory predicts that iodine will use sp3 hybrid orbitals in ICl2-.
Step-by-step explanation:
The valence bond theory predicts that iodine will use sp3 hybrid orbitals in ICl2-. In this molecule, iodine is surrounded by two chloride atoms, resulting in a trigonal planar electron pair geometry. To accommodate the three electron domains, iodine undergoes sp3 hybridization, which involves mixing of the 5s and 5p orbitals to form four sp3 hybrid orbitals.