VSEPR shape and bond angles
Moderators: Chem_Mod, Chem_Admin
VSEPR shape and bond angles
Hi, I read that molecules with the same VSEPR formula have the same shape, but differ in bond angle. How would I determine the difference between the bond angles in different molecules with the same shape and VSEPR formula? Also how would I be able to recognize the exceptions to this? In the book it gave the example SeCl6^2-.
-
- Posts: 33
- Joined: Fri Apr 06, 2018 11:03 am
Re: VSEPR shape and bond angles
I believe here you would be looking at the strengths of the bonds as a stronger bond would pull closer in one direction and therefore create a smaller angle.
-
- Posts: 32
- Joined: Tue Feb 20, 2018 3:01 am
Re: VSEPR shape and bond angles
Taizha 1C wrote:Hi, I read that molecules with the same VSEPR formula have the same shape, but differ in bond angle. How would I determine the difference between the bond angles in different molecules with the same shape and VSEPR formula? Also how would I be able to recognize the exceptions to this? In the book it gave the example SeCl6^2-.
I recommend always to draw out the structures first when looking at such a question. Also remember that single bonds are long, double bonds are shorter, and triple bonds are shortest. That may contribute to the answer.
Oh dont forget to determine the shape that helps too!
Re: VSEPR shape and bond angles
Okay, thank you! I believe I understand how to determine the difference now.
-
- Posts: 32
- Joined: Fri Apr 06, 2018 11:03 am
Re: VSEPR shape and bond angles
Do we have to know the specific bond angles for certain molecular shapes. For example, would it be acceptable to say (on a test) that sulfite ion, SO3 2-, have bond angles less than 109.5? Are approximations ok to state?
-
- Posts: 32
- Joined: Tue Feb 20, 2018 3:01 am
Re: VSEPR shape and bond angles
Mariah Guerrero 1J wrote:Do we have to know the specific bond angles for certain molecular shapes. For example, would it be acceptable to say (on a test) that sulfite ion, SO3 2-, have bond angles less than 109.5? Are approximations ok to state?
Yes according to my PLF that is fine.
Return to “Determining Molecular Shape (VSEPR)”
Who is online
Users browsing this forum: No registered users and 7 guests