Lewis Structures & VSEPR

[Fdonovan 3D]

Is it always necessary to draw the Lewis structure when using the VSEPR model? Or are there times when you don't really need it?

[bellaha4F]

I think drawing the Lewis structure out first is helpful when determining the VESPR model, but I don't know if it's necessary. However, on tests, they might expect us to draw it out.

[Claire Lo 3C]

Drawing lewis structures help you determine whether there are lone pairs or not, which influences the VSEPR structure. Thus to be safe, always draw out the VSEPR first.

[AKatukota]

Drawing the lewis structure is helpful, but it is not required.

[Qilan Li 4I]

The Lewis Structure can help you visualize the bonded pairs and the lone pairs so I personally believe it is very helpful to draw it out while using the VSEPR model. I think once you are familiar with the shape of a molecule, you wouldn't need to draw out the Lewis Structure.

[Ashley Tran 2I]

Drawing the Lewis structure can help you count up the total lone pairs and the total bonding pairs on a central atom which then correlates to the molecular shape and electron arrangement of a molecule. Remember, however, that you must be able to draw the most correct Lewis structure for this method to work.

[Leyna Dang 2H]

I don't think it's necessary, but I think it can help you determine the VSEPR structure if there are lone pairs.

[Daniel Martinez 1k]

Definitely not necessary. However, it can help you know how many lone pairs and bonded pairs there are, which is essential for VSEPR.

[Alexandra Bartolome 2H]

It's not necessary but it's always helpful so that you can see the locations of bonding electrons and lone pairs then use the VSEPR model and determine the structure.

[nicole-2B]

It is not totally necessary but can be helpful to determine the shape of the molecule.