Warm Up #12 Draw the following structures, labeling them with NAMES, SIGMA/PI BONDS and CHARGE (if necessary). SCl6 PO4-3 CO3-2 N2O The last three have.

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Presentation transcript:

Warm Up #12 Draw the following structures, labeling them with NAMES, SIGMA/PI BONDS and CHARGE (if necessary). SCl6 PO4-3 CO3-2 N2O The last three have at least 1 resonance structure. Show it next to your finished drawing with a

Bonding Structures Chapter 8.4

VSEPR Theory (“Vesper”) VSEPR Theory – lone pairs and bonds stay as FAR APART AS POSSIBLE Laws of attraction Goals: Symmetry and separation

One Central, Four Outer Tetrahedral – No lone pairs = symmetry 109.5o angles Ex. CH4 How to Draw: Bond BEHIND Bond OUTWARD

One Central, Three Outer Trigonal Planar - No lone pairs = even symmetry 120o angles BF3, CO3-2 Trigonal Pyramidal – Lone pair = repulsion DOWN 107o angles NH3

One Central, Two Outer Linear – no lone pairs = even symmetry 180o angles CO2 Bent – two lone pairs = repulsion 105o angles H2O

Quick Quiz #6 Draw and name the correct structures for the following: SO2-2 PO4-3 PCl3