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 BrF5

Video: Drawing the Lewis Structure for BrF5

For the BrF5 Lewis structure the total number of valence electrons (found on the periodic table) is 42. Once we know how many valence electrons there are in BrF5 we can distribute them around the central atom with the goal of filling the outer shells of each atom.

Note that in the Lewis structure for BrF5, Bromine (B) is in Period Four on the periodic table. This means it can hold more than eight valence electrons. This is called an expanded octet.

It is helpful if you:

  • Try to draw the BrF5 Lewis structure before watching the video.
  • Watch the video and see if you missed any steps or information.
  • Try structures similar to BrF5 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