SO2 Step 8

Picture so Far:
Step 8 in Lewis structure of SO2 
The last added resonance structure on the right expands the S octet to 10 and allows formal charges of 0 on all the atoms.  This last resonance structure is a little better than the first two.  So the two equivalent S-O bonds will be closer to double bonds than single bonds.
Total Valence Electrons 18
Used so Far  2(2)+2(6)+2 = 18
Remaining 0

Last updated: February 5, 2009
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