🤓 Based on our data, we think this question is relevant for Professor Tan's class at GMU.
In writing Lewis structures, we place the least electronegative element in the center because it can better share its electrons and form bonds than more electronegative elements.
Iodine (EN = 2.66) is less electronegative than fluorine (EN = 3.98) so iodine goes in the center of the Lewis structure. Since iodine belongs to Period 5, we can use an expanded octet to accommodate more F atoms in the molecule.
The Lewis structure for IF4+ is:
Predict the shape, state the hybridization of the central atom, and give the ideal bond angle(s) and any expected deviations for IF4+.
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Our data indicates that this problem or a close variation was asked in Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition. You can also practice Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition practice problems.