molecular shape-seesaw

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

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204929947
Posts: 76
Joined: Fri Apr 06, 2018 11:03 am

molecular shape-seesaw

Postby 204929947 » Wed Jun 06, 2018 10:39 pm

How do you know when it is a seesaw shape? I get it confused with the tetrahedral shape :(

Cindy Nguyen 1L
Posts: 48
Joined: Fri Apr 06, 2018 11:04 am

Re: molecular shape-seesaw

Postby Cindy Nguyen 1L » Wed Jun 06, 2018 11:18 pm

6 regions of electron density = 5 bonded atoms + 1 lone pair. ex. SF4. Tetrahedral has 4 regions of electron density.

Yeo Bin Yook 1K
Posts: 30
Joined: Fri Apr 06, 2018 11:05 am

Re: molecular shape-seesaw

Postby Yeo Bin Yook 1K » Fri Jun 08, 2018 9:51 am

For molecules like sulfur tetrachloride the reason why its shape is seesaw is primarily because the electrons want to be as far from each other as possible. If not it would look like a trigonal bypyrimidial but the lone pair would rather be at 120 degrees than 90.


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