S Character Influencing Bond Angles

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

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Maya Krishnan 3E
Posts: 20
Joined: Tue Oct 10, 2017 7:14 am

S Character Influencing Bond Angles

Postby Maya Krishnan 3E » Sun Nov 26, 2017 2:04 pm

Why when the S character increases, does the bond angle also increase?

Annalise Eder 2L
Posts: 49
Joined: Sat Jul 22, 2017 3:01 am

Re: S Character Influencing Bond Angles

Postby Annalise Eder 2L » Sun Nov 26, 2017 2:37 pm

You can determine the bond angle based on the hybridization. SP has 180 degree bond angle, SP2 has 120 degree bond angle, and SP3 has 109.5 degree bond angle usually. As the number of p orbitals increases the s character decreases as does the bond angle as seen with the given numbers.

Elika Asis 3C
Posts: 19
Joined: Fri Sep 29, 2017 7:07 am

Re: S Character Influencing Bond Angles

Postby Elika Asis 3C » Sun Nov 26, 2017 11:34 pm

The number of areas of electron density is usually what you should look at when determining the bond angles, but you should also pay attention to what kind of areas of electron density they are (EX: lone pairs vs. bonds; lone pairs usually repel other atoms more, therefore the bond angles are less than what you would have if an atom solely had bonds.


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