This article cannot be completed because there is no substance called IF17. IF17 is not a real chemical substance. Fluorine (F), with atomic number 9, can only form 7 resonance bonds because it has only 7 electrons in its outermost shell. Therefore, there cannot be a molecule with 17 atoms of Iodine (I) and Fluorine (F).
However, we can discuss the substance IF7, or iodine heptafluoride. This is a complex compound of iodine and fluorine. IF7 is a colorless gas at room temperature, with a fairly distinctive smell. It has a pentagonal bipyramidal structure. IF7 can react with water to generate HF and IOF5, and it reacts with metals to create the corresponding fluorides. The preparation of IF7 is usually carried out through the reaction between ICl and F2.
Note that IF7 and similar compounds must be handled with care because of their strong oxidizing properties and the ability to cause severe burns.