wedge and dash

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

Moderators: Chem_Mod, Chem_Admin

Alessia Renna 1D
Posts: 51
Joined: Wed Sep 30, 2020 9:36 pm

wedge and dash

Postby Alessia Renna 1D » Tue Dec 08, 2020 3:10 pm

can someone explain the wedge and dash notation?

Liam Bertrand 3
Posts: 82
Joined: Wed Sep 30, 2020 9:53 pm

Re: wedge and dash

Postby Liam Bertrand 3 » Tue Dec 08, 2020 3:34 pm

A wedge means it is coming towards you (picture straight out of the paper). And the dash means that it is going directly away from you (straight behind the paper). The wedge and the dash are in the same plane, just in opposite directions. Its a 2d representation of where the atoms or molecules are in 3d space.

BoparaiAdeshsurjit2F
Posts: 113
Joined: Wed Sep 30, 2020 9:51 pm

Re: wedge and dash

Postby BoparaiAdeshsurjit2F » Tue Dec 08, 2020 5:36 pm

Like said above, the wedge means it towards you and the dash is away from you

Taber Ball 1F
Posts: 50
Joined: Wed Sep 30, 2020 9:51 pm

Re: wedge and dash

Postby Taber Ball 1F » Wed Dec 09, 2020 6:19 pm

Alessia Renna 1D wrote:can someone explain the wedge and dash notation?


The dark wedge means it's coming towards you through the paper/screen and the dashed wedge means it's going away from you through the paper/screen. It is used to denote the three dimensionality of certain molecular shapes. Hope this helps!

Inderpal Singh 2L
Posts: 144
Joined: Wed Sep 30, 2020 10:02 pm
Been upvoted: 2 times

Re: wedge and dash

Postby Inderpal Singh 2L » Thu Dec 10, 2020 2:30 am

Wedge = to you
Dash = away from u

This helps visualize it.

Isabella Cortes 2H
Posts: 85
Joined: Wed Sep 30, 2020 9:37 pm

Re: wedge and dash

Postby Isabella Cortes 2H » Thu Dec 10, 2020 2:45 am

the wedges and dashes are used to help us visualize the 3D structures so wedge means that it is coming towards you and the dash means that it is going away from you. I hope this helps!!

Ariel Guan 1H
Posts: 91
Joined: Wed Sep 30, 2020 9:36 pm
Been upvoted: 1 time

Re: wedge and dash

Postby Ariel Guan 1H » Thu Dec 10, 2020 7:50 pm

wedge is towards you and dash is away from you; it's used to represent a structure in 3D space

Mari Williams 1K
Posts: 89
Joined: Wed Sep 30, 2020 9:53 pm

Re: wedge and dash

Postby Mari Williams 1K » Sat Dec 12, 2020 2:45 pm

Those are used to represent 3D structures! Imagine the wedge means the bond is coming towards you, and the dashed means its going away from you.

Will Skinner
Posts: 84
Joined: Wed Sep 30, 2020 9:28 pm

Re: wedge and dash

Postby Will Skinner » Sat Dec 12, 2020 3:09 pm

A solid wedge represents the bond closest to you. The dashed wedge represents the one furthest away from you.

Kelly Tran 1J
Posts: 141
Joined: Wed Sep 30, 2020 9:50 pm
Been upvoted: 1 time

Re: wedge and dash

Postby Kelly Tran 1J » Sat Dec 12, 2020 3:51 pm

As others have said above, wedges and dashes are used to help you visualize the shape and structure of the molecule. If you had a 3-d model of the molecule in front of you, a wedge indicates that the bond is facing towards you while a dash indicates that the bond is facing away from you.

905409193
Posts: 89
Joined: Wed Sep 30, 2020 10:06 pm

Re: wedge and dash

Postby 905409193 » Sat Dec 12, 2020 4:57 pm

Image
Hopefully, this helps as well!

Talia Dini - 3I
Posts: 134
Joined: Wed Sep 30, 2020 9:32 pm

Re: wedge and dash

Postby Talia Dini - 3I » Thu Dec 17, 2020 1:36 am

Hi, the wedge means towards you while the dash means away from you. Hope this helps!

Susan Chamling 1F
Posts: 86
Joined: Wed Sep 30, 2020 9:42 pm

Re: wedge and dash

Postby Susan Chamling 1F » Thu Dec 17, 2020 2:05 am

Hi! The wedge indicates the bond coming towards you while the dashed line represents the bond extending further away from your perspective. They’re both supposed to help us visualize the orientation of the bonds in three dimensional space

Adam_ElSayed_3B
Posts: 51
Joined: Wed Sep 30, 2020 9:48 pm

Re: wedge and dash

Postby Adam_ElSayed_3B » Thu Dec 17, 2020 2:19 am

If you're staring straight at it, a wedge is away from you and a dash is towards you. Sometimes you'll see a combined notation referring to the bond being either in different conformations.

America Ramirez 3H
Posts: 55
Joined: Wed Sep 30, 2020 9:44 pm

Re: wedge and dash

Postby America Ramirez 3H » Thu Dec 17, 2020 9:07 am

the solid wedge means that when you are standing straight in front of a molecule that atom or lone pair is coming straight at you. A dashed line means while in the same position that atom or lone pair is shooting straight behind you.


Return to “Determining Molecular Shape (VSEPR)”

Who is online

Users browsing this forum: No registered users and 2 guests