We’re being asked to **determine the preferred structure** for **CH _{3}SOCH_{3}**.

For this problem, we need to compare the formal charge of each structure.

Recall that the formula for the ** formal charge** is:

$\overline{){\mathbf{F}}{\mathbf{.}}{\mathbf{C}}{\mathbf{.}}{\mathbf{=}}{\mathbf{Group}}{\mathbf{}}{\mathbf{Number}}{\mathbf{-}}{\mathbf{(}}{\mathbf{Bonds}}{\mathbf{+}}{\mathbf{Nonbonding}}{\mathbf{}}{{\mathbf{e}}}^{{\mathbf{-}}}{\mathbf{)}}}$

Use formal charge to choose the best Lewis structure for CH_{3}SOCH_{3}.

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