seesaw

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

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JChen_2I
Posts: 107
Joined: Fri Aug 09, 2019 12:17 am

seesaw

Postby JChen_2I » Mon Nov 18, 2019 11:40 pm

Are the angles of a seesaw molecule 90 and 120 degrees? Or should they be slightly less than 90 and 120.
The textbook answer key says it should be 90 and 120 exactly, but shouldn't the lone pair repulsion cause the angles to be slightly smaller?

Leila_4G
Posts: 114
Joined: Sat Sep 14, 2019 12:17 am

Re: seesaw

Postby Leila_4G » Mon Nov 18, 2019 11:41 pm

Hi! I think it is less than 90 degrees and 120 degrees.

Natalie Wang 1B
Posts: 51
Joined: Sat Sep 14, 2019 12:15 am
Been upvoted: 1 time

Re: seesaw

Postby Natalie Wang 1B » Mon Nov 18, 2019 11:57 pm

I asked my TA, and he said that the angles will be less than 120 and 90.

Avnita C_4B
Posts: 50
Joined: Sat Sep 14, 2019 12:17 am

Re: seesaw

Postby Avnita C_4B » Tue Nov 19, 2019 12:14 am

Due to the repulsion of the lone pairs, they should be less than 90 and 120.

Adelpha Chan 1B
Posts: 58
Joined: Thu Jul 25, 2019 12:15 am

Re: seesaw

Postby Adelpha Chan 1B » Tue Nov 19, 2019 12:11 pm

JChen_3C wrote:Are the angles of a seesaw molecule 90 and 120 degrees? Or should they be slightly less than 90 and 120.
The textbook answer key says it should be 90 and 120 exactly, but shouldn't the lone pair repulsion cause the angles to be slightly smaller?

they should be slightly less than 90 and 120 degrees as the lone pair causes the angle to be less and not 90 and 120 degrees exactly

Heba Mengesha 3D
Posts: 50
Joined: Sat Sep 07, 2019 12:19 am

Re: seesaw

Postby Heba Mengesha 3D » Tue Nov 19, 2019 1:10 pm

The repulsion of the lone pairs will cause the bond angles to be slightly less than 90 and 120 degrees.


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