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In methylene chloride, the carbon atoms are joined to each other by a single bond, and each carbon atom is also bonded to two chlorine atoms by single bonds. The Lewis structure of methylene chloride is:
Cl-C-H
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H Cl Cl
The electron pairs in the single bonds are shown as lines. The carbon atoms have four valence electrons each, and the chlorine atoms have seven valence electrons each. The hydrogen atoms each have one valence electron.
The molecular shape of methylene chloride is tetrahedral, with the carbon atoms at the center and the chlorine atoms and hydrogen atoms at the corners. The bond angles are all approximately 109.5 degrees.