difference

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

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asalest 2K
Posts: 52
Joined: Wed Sep 30, 2020 9:39 pm

difference

Postby asalest 2K » Fri Dec 04, 2020 1:10 pm

how can we tell the difference between trigonal planar and t-shaped?

Valerie Doan 3I
Posts: 98
Joined: Wed Sep 30, 2020 10:03 pm
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Re: difference

Postby Valerie Doan 3I » Fri Dec 04, 2020 1:19 pm

Trigonal planar molecules have 4 electron pairs, 1 lone PR and 3 bonding pairs (with 3 atoms). T-shaped molecules have 5 electron pairs, 2 lone pairs and 3 bonding pairs (with 3 atoms). Both of these have 3 bonding pairs with 3 separate atoms, but the amount of lone pairs differs.

Lung Sheng Liang 3J
Posts: 90
Joined: Wed Sep 30, 2020 9:33 pm

Re: difference

Postby Lung Sheng Liang 3J » Sat Dec 05, 2020 6:01 pm

Trigonal planar does not have a lone pair while t-shaped has 2 lone pairs.

Gillian Gabrielsen2F
Posts: 95
Joined: Wed Sep 30, 2020 10:03 pm
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Re: difference

Postby Gillian Gabrielsen2F » Sat Dec 05, 2020 6:27 pm

Image
Trigonal Planar has uniform bond angles of 120°. It has three regions of electron density: three bound atoms and no lone pairs.
Image
T-shaped looks like a T; it doesn't have uniform bond angles, they're 90°, 180°. It has five regions of electron density: three bound atoms and two lone pairs.
Image
(tshape, but with the lone pairs drawn as the yellow portions)

David Liu 1E
Posts: 90
Joined: Wed Sep 30, 2020 10:07 pm

Re: difference

Postby David Liu 1E » Sat Dec 05, 2020 7:34 pm

they have different amounts of electron dense areas - trigonal planar has 3 electron dense (paired) areas while t-shaped has 5 electron dense areas while 2 are lone pairs (aka there should be a different amount of electrons on the molecule that will help you tell)


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