bond angle tips

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

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Natalie 3k
Posts: 96
Joined: Wed Sep 30, 2020 10:11 pm

bond angle tips

Postby Natalie 3k » Sun Nov 22, 2020 11:44 pm

Does any one have any tips for remembering the bond angles or is it just somethings that needs to be memorized as is?

Ryan Hoang 1D
Posts: 109
Joined: Wed Sep 30, 2020 9:49 pm

Re: bond angle tips

Postby Ryan Hoang 1D » Sun Nov 22, 2020 11:49 pm

Yeah, unfortunately I don't think it's super easy to memorize the bond angles. If you can visualize the yellow molecule toys that Dr. Lavelle showed us in class, that might help you distinguish between 120 degrees, or 109.5 degrees, etc. However, for a lot of the bond angles, you really just have to unfortunately memorize it. There are plenty of helpful charts on Google images that can help you with memorizing the VSEPR shapes.

Savana Maxfield 3F
Posts: 177
Joined: Wed Sep 30, 2020 10:00 pm

Re: bond angle tips

Postby Savana Maxfield 3F » Sun Nov 22, 2020 11:51 pm

Yeah I agree, it seems like the only way to really know the bond angles are to memorize them :(

Ayesha Aslam-Mir 3C
Posts: 118
Joined: Wed Sep 30, 2020 9:43 pm

Re: bond angle tips

Postby Ayesha Aslam-Mir 3C » Mon Nov 23, 2020 1:15 am

Theoretically if you know the geometry of a molecule, like how many bonds are in the same plane, you could divide that 360 degrees by that number; honestly, though, it is probably wiser to just use Quizlet to memorize or become familiar with the unique bond angles.

Margaret Wang 2D
Posts: 95
Joined: Wed Sep 30, 2020 9:58 pm

Re: bond angle tips

Postby Margaret Wang 2D » Mon Nov 23, 2020 8:19 am

Agreed, I think the only way is to memorize them. Thankfully, there's not that many different ones we have to memorize since a lot of molecules have the same shape and therefore the same angles.

Anna Yakura 2F
Posts: 130
Joined: Wed Sep 30, 2020 9:46 pm

Re: bond angle tips

Postby Anna Yakura 2F » Mon Nov 23, 2020 9:08 am

I think you might just have to memorize it. Thankfully some of them are straightforward and you can narrow down your options by pictures the different planes.

sophie esherick 3H
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Joined: Wed Sep 30, 2020 9:35 pm
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Re: bond angle tips

Postby sophie esherick 3H » Mon Nov 23, 2020 9:52 am

I think we have to memorize them. What I find really helpful is making flashcards so you can memorize them a little quicker. For molecules with one pairs such as NH3 and H2O, I don't think we have to memorize them besides stating that they would be less than the tetrahedral angle of 109.5 degrees.

Annette Fishman
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Joined: Wed Sep 30, 2020 10:03 pm
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Re: bond angle tips

Postby Annette Fishman » Mon Nov 23, 2020 12:51 pm

Best bet is to memorize them. We will continue to draw molecules and will have to know what they look like to look at its chemical properties. Luckily, its not that much and is typically straightforward once you get the hang of it.

Jaden Joodi 3J
Posts: 99
Joined: Wed Sep 30, 2020 9:31 pm

Re: bond angle tips

Postby Jaden Joodi 3J » Mon Nov 23, 2020 12:57 pm

The way I learned the bond angles in high school, was by making a table that contained the names of molecules, drawings of them, and the bond angles. By studying this, it allowed me to later recall the drawing that contained the bond angles

OwenSumter_2F
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Joined: Wed Sep 30, 2020 9:57 pm
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Re: bond angle tips

Postby OwenSumter_2F » Mon Nov 23, 2020 1:04 pm

For the common shapes, it should be fairly easy to know those angles since we work with them regularly. For shapes with lone pair electron density areas, those bond angles would be smaller than normal but different for each molecule, and we won't have to calculate those.

Inderpal Singh 2L
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Joined: Wed Sep 30, 2020 10:02 pm
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Re: bond angle tips

Postby Inderpal Singh 2L » Mon Nov 23, 2020 2:02 pm

The best bet would probably to use flashcards. I would also look at some YouTube videos, their might be some nice tips and tricks.


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