What to memorize in VSEPR?

(Polar molecules, Non-polar molecules, etc.)

Moderators: Chem_Mod, Chem_Admin

longjump
Posts: 29
Joined: Fri Sep 28, 2018 12:17 am

What to memorize in VSEPR?

Postby longjump » Wed Nov 14, 2018 4:23 pm

Will we need to memorize the angles in VSEPR theory or just the shapes?

Tyra Nguyen 4H
Posts: 74
Joined: Fri Sep 28, 2018 12:25 am

Re: What to memorize in VSEPR?

Postby Tyra Nguyen 4H » Wed Nov 14, 2018 4:30 pm

Most likely the bond angles too! Dr.Lavelle said we would have to know how SO32- has a repulsion strength of less than the expected trigonal pyramidal shape of 109.5o due to its lone pair repulsion, so I'm assuming we also have to know the other basic bond angles.

yea-lyn pak_1G
Posts: 30
Joined: Fri Sep 28, 2018 12:18 am

Re: What to memorize in VSEPR?

Postby yea-lyn pak_1G » Wed Nov 14, 2018 4:48 pm

You're going to need to know the bond angles, too, because this contributes to the overall shape of the structure.

Soyoung Park 1H
Posts: 30
Joined: Sat Sep 29, 2018 12:15 am

Re: What to memorize in VSEPR?

Postby Soyoung Park 1H » Thu Nov 15, 2018 12:27 am

So what is exactly VSEPR model?

AJ Manzano 3K
Posts: 16
Joined: Fri Sep 28, 2018 12:25 am

Re: What to memorize in VSEPR?

Postby AJ Manzano 3K » Thu Nov 15, 2018 12:36 am

I'm pretty sure we are going to have to know the angles as well as the name of the shapes.
The VSEPR (Valence Shell Electron Pair Repulsion) model explains the experimentally observed shape of molecules. Basically, this is how the molecule would be structured in a 3 dimensions (real life).

Sophie Roberts 1E
Posts: 61
Joined: Fri Sep 28, 2018 12:17 am

Re: What to memorize in VSEPR?

Postby Sophie Roberts 1E » Thu Nov 15, 2018 12:10 pm

I'm assuming we have to memorize the angles too because we are supposed to understand the concept of how lone pairs affect the bond angles, so therefore you should be able to derive the angles based on the shape of the molecule.

Michelle Cervantes 1H
Posts: 12
Joined: Fri Sep 28, 2018 12:18 am

Re: What to memorize in VSEPR?

Postby Michelle Cervantes 1H » Thu Nov 15, 2018 12:25 pm

So will the next test just involve having to memorize the bond angles and types of shapes? I feel that's probably the most important thing to know in VSEPR but I could be wrong

Camille Marangi 2E
Posts: 60
Joined: Fri Sep 28, 2018 12:26 am

Re: What to memorize in VSEPR?

Postby Camille Marangi 2E » Thu Nov 15, 2018 12:39 pm

Soyoung Park 1H wrote:So what is exactly VSEPR model?


The VSEPR model stands for valence shell electron pair repulsion theory and it's basically model used in chemistry to predict the geometry of individual molecules from the number of electron pairs surrounding their central atoms

pauline_le_3I
Posts: 21
Joined: Fri Sep 28, 2018 12:25 am

Re: What to memorize in VSEPR?

Postby pauline_le_3I » Thu Nov 15, 2018 1:03 pm

All we really need to memorize are the basic angles of 90, 120, and 109.5, and also how lone pairs can either increase or decrease those angles. We also need to memorize the names of the different types of shapes (e.g. tetrahedral, trigonal pyramidal, seesaw).


Return to “Determining Molecular Shape (VSEPR)”

Who is online

Users browsing this forum: No registered users and 3 guests