Section 2E #27a

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

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Doreen Liu 4D
Posts: 54
Joined: Wed Sep 11, 2019 12:17 am

Section 2E #27a

Postby Doreen Liu 4D » Tue Nov 19, 2019 9:00 pm

What would be the Lewis Structure of C5H5N? Would we have to know how to draw that on the test?

Ruby Tang 2J
Posts: 102
Joined: Fri Aug 30, 2019 12:15 am

Re: Section 2E #27a

Postby Ruby Tang 2J » Wed Nov 20, 2019 8:03 am

If you're referring to the question that asks you to predict whether C5H5N would be polar, you technically don't need to draw the Lewis structure to figure it out. The C-H and C-N dipole moments are different, and there is a difference in electron pull between all of the atoms (N is more electronegative and thus has a stronger tendency to attract electrons). Therefore, because there is no way that you could arrange the atoms such that the molecular geometry could cancel out the dipoles, you know C5H5N has to be polar.

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