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 PO33-
Video: Drawing the Lewis Structure for PO33-
For the PO3 3- Lewis structure we first count the valence electrons for the PO3 3- molecule using the periodic table. Once we know how many valence electrons there are in PO3 3- we can distribute them around the central atom and attempt to fill the outer shells of each atom.
There are a total of 26 valence electrons in the PO3 3- Lewis structure.
For the Lewis structure for PO3 3- you should take formal charges into account to find the best Lewis structure for the molecule.
It is helpful if you:
- Try to draw the PO33- Lewis structure before watching the video.
- Watch the video and see if you missed any steps or information.
- Try structures similar to PO33- 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 |
XeF4 |