7th edition 2E. 5

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

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Alyssa Bryan 3F
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Joined: Fri Sep 28, 2018 12:26 am
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7th edition 2E. 5

Postby Alyssa Bryan 3F » Sun Nov 11, 2018 7:52 pm

For the CH2F2 structure, the answer in the book shows more of a 3D model indicated by the filled in wedge and striped line wedge for the bonds between the carbon and hydrogens. Do we need to draw the lewis structure like that or can we draw it how we have been doing, in the 2D model?

Diviya Khullar 1G
Posts: 59
Joined: Fri Sep 28, 2018 12:19 am

Re: 7th edition 2E. 5

Postby Diviya Khullar 1G » Sun Nov 11, 2018 8:13 pm

I think we can draw the structure like that with the filled in and stripped wedge. But the more important thing is naming the correct molecular shape of the molecule.

Anna O 2C
Posts: 98
Joined: Fri Sep 28, 2018 12:19 am

Re: 7th edition 2E. 5

Postby Anna O 2C » Sun Nov 11, 2018 10:41 pm

I would recommend drawing the structure with the implied "3Dness" (the dashes and the solid black triangles) since that is the only way you can correctly label it a tetrahedral. If you draw it in the 2D version, the bond angles won't be displayed properly because that would imply that the molecule is flat with both 90 degree and 180 degree bond angles which wouldn't make sense. Hope that helped!

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