Homework 2E.1

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

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MaryBanh_2K
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Joined: Wed Sep 18, 2019 12:21 am

Homework 2E.1

Postby MaryBanh_2K » Thu Nov 14, 2019 7:11 pm

How can we tell if a molecule has lone pairs of electrons on the central atom or not?

Kavya Immadisetty 2B
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Joined: Sat Aug 24, 2019 12:17 am
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Re: Homework 2E.1

Postby Kavya Immadisetty 2B » Thu Nov 14, 2019 7:18 pm

You figure that out by drawing the Lewis structure. You should follow all the rules that we learned the past few weeks (most atoms must have complete octets, you want the lowest possible formal charge, etc)

Anthony Hatashita 4H
Posts: 103
Joined: Wed Sep 18, 2019 12:21 am

Re: Homework 2E.1

Postby Anthony Hatashita 4H » Thu Nov 14, 2019 7:35 pm

When drawing the lewis structure, make sure to remember formal charges!

Annie Chantasirivisal_4G
Posts: 114
Joined: Wed Sep 18, 2019 12:21 am

Re: Homework 2E.1

Postby Annie Chantasirivisal_4G » Thu Nov 14, 2019 7:38 pm

Since 2E.1 already gives us the shape of the molecule, would we have to find what molecule fits that shape when you "draw it out" to see the lone pairs?

Ellis Song 4I
Posts: 102
Joined: Thu Jul 11, 2019 12:17 am

Re: Homework 2E.1

Postby Ellis Song 4I » Thu Nov 14, 2019 8:05 pm

You can tell if there are lone pairs based on how the structure is drawn. For part a there has to be lone pairs because of how the other bonds are at an angle which means they are being repelled by a lone pair. For part b there is no obvious repulsion but there can still be lone pairs if there was a pair on both sides of the central atom which would make still create a linear shape with the atoms.


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