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 O₃

Video: Drawing the Lewis Structure for O₃

For the O₃ Lewis structure, calculate the total number of valence electrons for the O₃ molecule. There are a total of 18 valence electrons for the O₃ Lewis structure. After determining how many valence electrons there are for Ozone, place them around the central atom to complete the octets.

Note that the Lewis Structure for Ozone does have resonance. We could place the double bond on either side of the O₃ molecule. In reality, the structure is an average of the two resonance structures..

Video: Drawing the Lewis Structure for O₃

It is helpful if you:

• Try to draw the O₃ Lewis structure before watching the video.
• Watch the video and see if you missed any steps or information.
• Try structures similar to O₃ 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