It has an unusual pentagonal bipyramidal structure, as predicted by VSEPR theory. Hybridisation of iodine in IF7 molecule is 1. sp3d3 2. sp3d 3. sp3d2 4. dsp2 5.The molecule which contains sp3d2 and p orbitals overlapping in it is 1. A more accurate description of the bonding in in $\ce{IF7}$ Iodine heptafluoride is one of the classic examples when it comes to describing hypervalency and octet-expansion. IF7 6. Join Yahoo Answers and get 100 points today. We have three molecules of iodine here which along with an extra elect… Chem. Am. In chemistry, a pentagonal bipyramid is a molecular geometry with one atom at the centre with seven ligands at the corners of a pentagonal bipyramid.A perfect pentagonal bipyramid belongs to the molecular point group D 5h.. Draw the structure of I F 7 . sp 3 d 3 HYBRIDIZATION - EXAMPLE 1) Iodine heptafluoride (IF 7): * The electronic configuration of Iodine atom in the ground state is: [Kr]4d 10 5s 2 5p 5. Therefore, the electron pair geometry is trigonaly bipyramidal, and since one is a lone pair, then the molecular geometry is "see-saw", and the hybridization of iodine is sp3d. In ICl3 you have a single bond between I and each Cl and two lone pairs of electrons on the I. What is the hybridisation of iodine in IF.