## Drawing Lewis Structures on the Final Exam

Brynne Keyser 1B
Posts: 31
Joined: Fri Apr 06, 2018 11:03 am

### Drawing Lewis Structures on the Final Exam

When we draw Lewis structures on the final exam, do the bond angles need to be accurate?

Thank you!

Odalys Cuevas 1C
Posts: 31
Joined: Fri Apr 06, 2018 11:02 am

### Re: Drawing Lewis Structures on the Final Exam

I remember hearing that you don't have to be exactly accurate when drawing them since it can get tricky, but you should know what the angles are for the shapes in the VSEPR structure if you are asked for them. For example for AX3 its trigonal planar and has bond angles of 120.

AshleyLamba1H
Posts: 30
Joined: Fri Apr 06, 2018 11:03 am

### Re: Drawing Lewis Structures on the Final Exam

I'm pretty sure that when you state the bond angles for structures that have lone pairs (which decrease bond angle size), you can just say that the bond angles are "less than [blank] degrees." For example, for the molecule SnCl2, the VSEPR structure is AX2E, and the bond angle is <120 degrees.

Allen Chen 1J
Posts: 31
Joined: Wed Nov 15, 2017 3:04 am

### Re: Drawing Lewis Structures on the Final Exam

The bond angles without lone pairs need to be accurate but as you add lone pair repulsion it becomes impossible to know exact angle so you can only say less than x degrees. I think

ErinKim1I
Posts: 31
Joined: Fri Apr 06, 2018 11:03 am

### Re: Drawing Lewis Structures on the Final Exam

I'm not sure if bond angles really matter for a lewis structure... I was told that they are important mostly for VSEPR, b/c that represents a 3D space.

Vivian Gonzalez 1A
Posts: 30
Joined: Fri Apr 06, 2018 11:03 am

### Re: Drawing Lewis Structures on the Final Exam

Bond angles do not have to be accurate for lewis structure and if I remember correctly we will not be asked to draw the shapes for VSEPR. We just need to know the names of the shapes and the bond angles