Iodine forms a molecular compound with fluorine having the empirical formula IF₃.
(a) Draw a complete Lewis electron-dot diagram for IF₃ that satisfies the octet rule as fully as possible for each atom.
(b) For the iodine atom, state the total number of regions of electron density and describe the spatial arrangement adopted by those regions.
(c) Based on your answer to part (b), identify the molecular shape (name only) about the iodine atom.
(d) Sketch a three-dimensional representation of the molecule, clearly indicating the positions of atoms, lone pairs, and all bond angles.
(e) Predict whether IF₃ is polar as a whole. Support your prediction with reference to both individual bond dipoles and the overall geometry.
(a) Lewis electron-dot diagram
(b) Regions of electron density and spatial arrangement
(c) Molecular shape
(d) Three-dimensional sketch
(e) Polarity prediction with justification