Test 2

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

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Jesalynne 2F
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Joined: Wed Sep 18, 2019 12:18 am

Test 2

Postby Jesalynne 2F » Sun Nov 17, 2019 5:36 pm

When determining the molecular shape and bond angles do the Lewis structures have to be drawn as accurately as possible?

Kennedi2J
Posts: 101
Joined: Wed Sep 18, 2019 12:20 am

Re: Test 2

Postby Kennedi2J » Sun Nov 17, 2019 5:38 pm

You should draw the most stable Lewis structure when doing calculating the bond angle.

105335337
Posts: 103
Joined: Sat Aug 24, 2019 12:15 am

Re: Test 2

Postby 105335337 » Sun Nov 17, 2019 5:39 pm

While the bond angles and shape do not have to be drawn correctly (because you can tell the shape based on bonding pairs / lone pairs), it would be extremely helpful to draw them as close as possible. If the question specifically asks for the lewis structure, then it does need to be drawn correctly.

Nicholas Chin 1G
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Joined: Thu Jul 11, 2019 12:17 am

Re: Test 2

Postby Nicholas Chin 1G » Sun Nov 17, 2019 5:43 pm

He said that we will never be graded on drawing Lewis structures according to VSEPR model. All you have to do is write out the bond angle and shape and stuff.

AGaeta_2C
Posts: 112
Joined: Wed Sep 18, 2019 12:21 am

Re: Test 2

Postby AGaeta_2C » Sun Nov 17, 2019 5:45 pm

I think just to be safe you should draw it as accurately as you can. However if the question asks you to name the molecular shape then that should be the top priority. I hope this helps!

Kendall 3H
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Joined: Wed Sep 18, 2019 12:18 am

Re: Test 2

Postby Kendall 3H » Sun Nov 17, 2019 5:47 pm

When drawing the Lewis Dot structures I think it is important to make sure you have placed the correct amount of double bonds and single bonds and lone pairs around all of the atoms; however, I don't think it is important to make sure your drawing is depicting the correct angles of the bonds because that would be very hard to do. It is just important to write the correct angles and identify the shape.

AveryAgosto
Posts: 76
Joined: Wed Sep 18, 2019 12:16 am

Re: Test 2

Postby AveryAgosto » Sun Nov 17, 2019 5:51 pm

By drawing the most stable lewis structure, you will be able to determine the correct shape.

Maika Ngoie 1B
Posts: 97
Joined: Fri Aug 02, 2019 12:16 am

Re: Test 2

Postby Maika Ngoie 1B » Sun Nov 17, 2019 6:15 pm

If the most stable lewis structure is drawn, you will be able to properly determine the regions of electron density and the lone pairs which will then allow you to identify the correct VESPR shape

Claire Stoecklein 1E
Posts: 49
Joined: Sat Jul 20, 2019 12:15 am

Re: Test 2

Postby Claire Stoecklein 1E » Sun Nov 17, 2019 7:01 pm

You must have the right type of bonds and number of lone pair electrons in your Lewis structure to get the right shape, and therefore, bond angles. However, because resonance is just a blend of all possible structures, you can get the right shape with just one resonance structure.

Jessica Tejero 3L
Posts: 54
Joined: Wed Sep 25, 2019 12:16 am

Re: Test 2

Postby Jessica Tejero 3L » Sun Nov 17, 2019 7:16 pm

if you're not very sure on whether you can correctly visualize the molecule in your head then its safe to draw the lewis structure for an accurate VSEPR shape

Sreyes_1C
Posts: 90
Joined: Fri Sep 28, 2018 12:19 am

Re: Test 2

Postby Sreyes_1C » Sun Nov 17, 2019 7:42 pm

it is definitely safe to draw the most stable lewis structure to help with that.

VLi_2B
Posts: 99
Joined: Sat Sep 14, 2019 12:15 am

Re: Test 2

Postby VLi_2B » Sun Nov 17, 2019 7:44 pm

This has probably already been said, but can someone list all the topics that will be covered on this upcoming test

April Meza 3K
Posts: 66
Joined: Sat Sep 21, 2019 12:36 am

Re: Test 2

Postby April Meza 3K » Sun Nov 17, 2019 7:44 pm

Drawing the lewis structure can be really helpful if you're not completely sure and want to be safe!

ZainAlrawi_1J
Posts: 71
Joined: Sat Aug 24, 2019 12:16 am

Re: Test 2

Postby ZainAlrawi_1J » Sun Nov 17, 2019 7:46 pm

Draw the most stable structure (formal charges in mind) in order to accurately predict the shape

Vivianvelazquez_1J
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Joined: Thu Jul 11, 2019 12:17 am
Been upvoted: 1 time

Re: Test 2

Postby Vivianvelazquez_1J » Sun Nov 17, 2019 7:51 pm

VLi_1L wrote:This has probably already been said, but can someone list all the topics that will be covered on this upcoming test

Everything that he has covered after the Midterm up until the first slide he will show us in this Monday's lecture will be on the test.

Jasmine Summers 4G
Posts: 50
Joined: Wed Sep 18, 2019 12:17 am

Re: Test 2

Postby Jasmine Summers 4G » Sun Nov 17, 2019 7:53 pm

The double/single bonds doesn't matter as much, the lewis structure just helps you figure out where the lone pairs are and how the bound atoms are distributed.

brennayoung
Posts: 51
Joined: Fri Sep 20, 2019 12:17 am

Re: Test 2

Postby brennayoung » Sun Nov 17, 2019 8:07 pm

When drawing the Lewis structures do we have to use the dashed lines and filled in lines to demonstrate which plane the atoms are on? Or is that like a separate thing from Lewis Structures?

thanh24mai
Posts: 50
Joined: Thu Jul 25, 2019 12:17 am

Re: Test 2

Postby thanh24mai » Sun Nov 17, 2019 8:21 pm

do we need to know hybridization for the test?

rohun2H
Posts: 100
Joined: Wed Sep 18, 2019 12:19 am

Re: Test 2

Postby rohun2H » Sun Nov 17, 2019 8:35 pm

Technically, the shape does not matter in a lewis structure, although Lavelle said drawing them symmetrically (or now similar to VSEPR model) would help to visualize the molecule.

emaad_3H
Posts: 51
Joined: Thu Jul 11, 2019 12:17 am

Re: Test 2

Postby emaad_3H » Sun Nov 17, 2019 8:58 pm

Draw the most stable Lewis structure (as we were required to do before) and determine the molecular shape and bond angle for it.


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