Lewis Dot Diagrams

Molecules to Draw

Draw Lewis Dot Diagrams for the following molecules. Count up the total valence electrons before you begin and make sure they all make it into the structure you draw. Be sure to show all lone pairs. Be sure to see the detailed instructions about how to draw a structure.


  1. CO2
  2. CS2
  3. CH4
  4. CCl4 (central C)
  5. CCl2F2 (central C)

  1. H2O
  2. H2S
  3. SCl2
  4. HCl
  5. HBr


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  1. NH3
  2. NF3
  3. NH2Cl (central nitrogen)
  4. C2H6O (carbon-carbon-oxygen sequence)
  5. C2H6O (carbon-oxygen-carbon sequence)

  1. C3H8O (how many variations can you draw?)
  2. HClO2 (central chlorine)
  3. C2H5Cl (carbon-carbon-chlorine sequence)
  4. C2H6
  5. C2H4


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  1. C2H2
  2. CCl3CHO (carbon-carbon sequence)
  3. CNCOCN (carbon-carbon-carbon sequence)
  4. BeCl2
  5. AlF3
  1. C2H4O2 (two oxygens bond to one of the carbons)
  2. H2O2
  3. OH–
  4. NO3–
  5. SO42–