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For the incomplete Lewis structure drawn, assign the charges to the O and S atoms of dimethylsulphoxide (DMSO) (overall charge on the molecule is neutral; feel free to consult a periodic table; Me = methyl).

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Correct Answer: C. S1+ and O1-
Sulfur (S) is below oxygen in the 6th group in the periodic table. They both have 6 valence electrons and thus can fulfill the octet in the following Lewis structures:
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