Shape

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

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Matt Sanruk 2H
Posts: 131
Joined: Wed Sep 18, 2019 12:21 am

Shape

Postby Matt Sanruk 2H » Wed Nov 13, 2019 3:17 pm

So regarding today's lecture the topics are only when there are no lone pairs this is correct?

Jordan Young 2J
Posts: 102
Joined: Thu Jul 25, 2019 12:17 am
Been upvoted: 1 time

Re: Shape

Postby Jordan Young 2J » Wed Nov 13, 2019 3:22 pm

Yeah, for the ones we learned today, they all had no lone pairs on the central atom. But there are different shapes when the central atom has lone pairs, which we will probably learn soon.

Matt Sanruk 2H
Posts: 131
Joined: Wed Sep 18, 2019 12:21 am

Re: Shape

Postby Matt Sanruk 2H » Wed Nov 13, 2019 3:24 pm

Ah ok I remember learning something similar to this in high school and was described with AXE, right?

Shutong Hou_1F
Posts: 117
Joined: Sat Sep 14, 2019 12:17 am

Re: Shape

Postby Shutong Hou_1F » Wed Nov 13, 2019 3:30 pm

Yes, because we are only trying to name the shape of molecules.

simmoneokamoto3K
Posts: 50
Joined: Mon Jun 17, 2019 7:22 am

Re: Shape

Postby simmoneokamoto3K » Wed Nov 13, 2019 3:35 pm

Yes , we shouldn't be worrying about lone pairs because professor lavelle mentioned that we only need to name the molecule.

Matt Sanruk 2H
Posts: 131
Joined: Wed Sep 18, 2019 12:21 am

Re: Shape

Postby Matt Sanruk 2H » Wed Nov 13, 2019 3:37 pm

But they will affect the shape, right? It's just that he will cover that in a later discussion right?

xenamclean_1G
Posts: 51
Joined: Sat Jul 20, 2019 12:15 am

Re: Shape

Postby xenamclean_1G » Wed Nov 13, 2019 4:22 pm

Yes, based on the lecture alone today, lone pairs don't have an effect on the shape. We haven't looked at lone pair electrons with the central atom yet.

Victoria Otuya 4F
Posts: 50
Joined: Wed Sep 18, 2019 12:21 am

Re: Shape

Postby Victoria Otuya 4F » Wed Nov 13, 2019 7:47 pm

But when reading pg. 108 of the chemistry book, it does state that lone pairs and bonds are considered when identifying the shape of a molecule. So it changes the structure.

Ruby Richter 2L
Posts: 103
Joined: Thu Jul 25, 2019 12:17 am

Re: Shape

Postby Ruby Richter 2L » Wed Nov 13, 2019 8:09 pm

He will probably go over it in more depth next lecture, but the introduction of lone pairs onto the central atom of a molecule changes the shape. A good example of this is the tetrahedral shape, which is altered to a seesaw with the introduction of a lone pair on the central atom, as in TeCl4.


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