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 IF₅

Video: Drawing the Lewis Structure for IF₅

Iodine is below Period Two on the periodic table so it can have an expanded octet (hold more than eight valence electrons). In the Lewis structure for IF5 you'll need to put a total of 12 valence electrons on the Iodine atom in order to draw the Lewis structure.

Remember that Iodine (I) can hold more than eight valence electrons.

For the IF5 Lewis structure, calculate the total number of valence electrons for the IF5 molecule. After determining how many valence electrons there are in IF5 , place them around the central atom to complete the octets.

There are a total of 42 valence for the Lewis structure for IF5.

It is helpful if you:

• Try to draw the IF₅ Lewis structure before watching the video.
• Watch the video and see if you missed any steps or information.
• Try structures similar to IF₅ 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