Lecture Notes 9

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Unformatted text preview: .. ... ... ... ... ... ... ... . . ... ... ... ... ... ... ... ... . . . ... ... .. ... ... ... ... .. .. F . . ... ... ... ... ... ... ... ... ... . ... . ... ... ... ... . . ... . ... ... ... . . ... ... . ... ... . . . ... . ... . . ... . . ... . .. .. . ... . ... . . . ... ... . . ... . ... . ... ... ... . . ... . .. . .. . ... . .. . . . . . . . . . F P F P FF F F place the remaining 30 electrons as lone pairs on the F atoms: GChem I 9.15 · ·· F · ·· · ·· F · ·· ... ... ... ... ... ... ... ... . . . . ... ... ... ... ... ... ... ... P . . . . . . . . . . . . . . . . . . . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . . ·F· · ·· · ·· · F ·· · ·· · F ·· · P has an expanded octet (extended valence) origin: d -orbitals are involved 2 6 octet rule: ns + np −→ 8e − Exercise: Write the Lewis structure for the triiodide ion I3 − A = 3 × 7 + 1 = 22 N = 3 × 8 = 24 S = N − A = 24 − 22 = 2 =⇒ 1 bonds one bond pair? need two bond...
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This document was uploaded on 03/18/2014 for the course CHEM 1303 at SMU.

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