dash and wedge diagram

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

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Samantha Chung 4I
Posts: 77
Joined: Wed Oct 03, 2018 12:16 am

dash and wedge diagram

Postby Samantha Chung 4I » Fri Nov 16, 2018 12:59 pm

Does the arrangement of the dash and wedge matter when drawing the shape/structure of a molecule?

Nikki Bych 1I
Posts: 60
Joined: Fri Sep 28, 2018 12:16 am

Re: dash and wedge diagram

Postby Nikki Bych 1I » Fri Nov 16, 2018 1:42 pm

Lavelle mentioned in lecture that we don't need to draw them using the dash wedge diagram, just the lewis structures. You just have to be able to recognize the shape based off of how many lone pairs/bonding pairs.

Venya Vaddi 1L
Posts: 96
Joined: Fri Sep 28, 2018 12:16 am
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Re: dash and wedge diagram

Postby Venya Vaddi 1L » Fri Nov 16, 2018 5:39 pm

I think the dash is usually drawn to show that the atom is going away from you and the wedge is usually drawn to show the atom is coming towards you.

juliasloan_4g
Posts: 67
Joined: Fri Sep 28, 2018 12:28 am

Re: dash and wedge diagram

Postby juliasloan_4g » Fri Nov 16, 2018 6:06 pm

the dash shows that the atom is farther away from you and the wedge shows that the atom is coming towards you. We do not need to draw the Lewis structures this way it is just helpful to visualize the 3d nature of molecules on a 2d surface. However, if you were to draw them this way, where the dashes and wedges were would matter because it may illustrate an incorrect 3d shape if you are drawing atoms on the wrong plane.


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