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10 May, 23:32

Which resonance forms of silicon dioxide contribute the most to the actual bonding?

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  1. 11 May, 02:58
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    Sulfur dioxide, or SO2, has two resonance structures which contribute equally to the overall hybrid structure of the molecule. However, a third Lewis structure can be drawn for SO2 which is more stable in theory, but doesn't quite match experimental data. All 18 valence electrons are accounted for - 6 electrons from 3 bonds and 10 electrons distributed as lone pairs on the three atoms. A couple of important things to notice here. These two resonance structures are equivalent and will contribute equally to the hybrid structure. Both structures have formal charges - the negative formal charge is placed on the more electronegative atom - oxygen, while the positive charge is placed on sulfur, the less electronegative of the two atoms.
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