Bond Angles

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

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Sally kim 4F
Posts: 53
Joined: Thu Jul 25, 2019 12:17 am

Bond Angles

Postby Sally kim 4F » Sun Nov 24, 2019 2:45 pm

Can someone list the bond angles for the different molecule shapes that I can refer back to?

TheresaDsilva4A
Posts: 53
Joined: Thu Jul 25, 2019 12:17 am

Re: Bond Angles

Postby TheresaDsilva4A » Sun Nov 24, 2019 2:56 pm

Here are the different molecular shapes and their bond angles as defined by VSEPR theory:
(2 regions of electron density) Linear: 180 degrees
(3 regions of electron density) Trigonal Planar: 120 degrees, Bent: <120 degrees
(4 regions of electron density) Tetrahedral: 109.5 degrees, Trigonal Pyramidal: <109.5 degrees, Bent: <<109.5 degrees
(5 regions of electron density)Trigonal Bipyramidal: 90 degrees, 120 degrees, Seesaw: 90 degrees, <120 degrees, T-shape: <90 degrees
(7 regions of electron density) Octahedral: 90 degrees, Square Pyramidal: <90 degrees, Square Planar: 90 degrees
*Note: The addition of lone pairs decreases the bond angle due to the fact the strong repulsive forces of lone pairs.

Hope this helps!

Qilan Li 4I
Posts: 54
Joined: Mon Jun 17, 2019 7:23 am

Re: Bond Angles

Postby Qilan Li 4I » Sun Nov 24, 2019 3:32 pm

I attached a picture of a molecular geometry chart. It includes the names, the bond angles, and pictures. You can also google "molecular geometry chart" and see many examples that include bond angles, pictures of the shapes, and the corresponding names.
Attachments
Screen Shot 2019-11-24 at 3.28.46 PM.png


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