Commonly Tested Lewis Structures

We draw Lewis Structures to predict:

-the shape of a molecule.

-the reactivity of a molecule and how it might interact with other molecules.

-the physical properties of a molecule such as boiling point, surface tension, etc.

Drawing the Lewis Structure for CH4

For CH4 you have a total of 8 total valence electrons.

Drawing the Lewis structure for CH4 (named methane) requires only single bonds. It's one of the easier Lewis structures to draw.

Remember that hydrogen atoms always go on the outside of a Lewis structure and that they only need two valence electrons for a full outer shell.

Video: Drawing the Lewis Structure for CH4

It is helpful if you:

  • Try to draw the CH4 Lewis structure before watching the video.
  • Watch the video and see if you missed any important steps or information.
  • Try structures similar to CH4 (like H2O) for more practice.

List of Lewis Structures

Acetone BF3 BH4- BrF5 BrO3- C2H2 C2H4 ClO-
CH4 ClO2- ClO2 ClO4- CO CS2 H2O H3O+
HCl HNO3 I3- ICl4- IF5 N2 N3- NH2OH
NH3 NO2- NO2 NO3- O2 OF2 PCl5 PH3
PO33- PO43- SCl2 SF4 SF6 SO3 SO42- XeF2