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+WS 3.9 Exceptions to the Octet Rule You already know (hopefully) that most elements prefer an _________ of electrons. Boron is one exception, which only wants ____. There are other exceptions, including elements which can have 10 or even 12 ____________ electrons around them! These extra electrons tend to form bonds in empty, unused “d” orbitals. For example, ______________’s valence shell configuration is 3s23p3. more bonds. Ans IRO: cesium If its vacant “d” orbitals are used, this element can form octet phosphorus six valence Determine the Lewis structure and geometry of the following exceptions to the octet rule: Lewis structure PF5 XeF4 XeF2 SF6 I3- SF4 IF5 ICl4- electronic geometry molecular geometry