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Bond angles of See Saw

Posted: Wed Nov 28, 2018 1:32 pm
by Julia Lindner 1I
According to an answer in the textbook (2E.11 a), the bond angles for a see saw shape (SCl4) are the same as those for trigonal bipyramidal- 120 and 90 degrees. Shouldn't the angles be slightly less because of the lone pair?

Re: Bond angles of See Saw

Posted: Wed Nov 28, 2018 1:55 pm
by Clarissa Cabil 1I
The bond angles for trigonal bipyramidal are 180º, 120º, and 90º and the bond angles for seesaw should be slightly less than 120º and slightly less than 90º because of the lone electron pair. So, I think you're correct, but bond angles do differ according to different molecules.

Re: Bond angles of See Saw

Posted: Wed Nov 28, 2018 2:32 pm
by Sam Kelly 1K
Yeah the angles would be slightly less than 90 and 120 degrees due to the lone pair, but you wouldn't have to give exact numbers on a test or anything