Bond Angle

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

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Bond Angle

Postby Jennifer_Lam_1A » Wed Nov 02, 2016 1:03 pm

On page 98 of the course reader, it says that H2O has a bond angle of 104.5 as opposed to 109.5. Can someone please explain this to me? If this question were on an assessment, do we have to specifically say 104.5 or can we just indicate that it would be around/less than 109.5? Thanks in advance!

Aditya Mamtora 2C
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Joined: Sat Jul 09, 2016 3:00 am

Re: Bond Angle

Postby Aditya Mamtora 2C » Wed Nov 02, 2016 1:13 pm

We just have to say less than 109.5 because VSEPR only allows us to know qualitatively the bond angles. It is less than 109.5 because the two lone pairs above the oxygen force down the bonds making the two bonds closer to each other.

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