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Homework 2E.1

Posted: Thu Nov 14, 2019 7:11 pm
by MaryBanh_2K
How can we tell if a molecule has lone pairs of electrons on the central atom or not?

Re: Homework 2E.1

Posted: Thu Nov 14, 2019 7:18 pm
by Kavya Immadisetty 2B
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)

Re: Homework 2E.1

Posted: Thu Nov 14, 2019 7:35 pm
by Anthony Hatashita 4H
When drawing the lewis structure, make sure to remember formal charges!

Re: Homework 2E.1

Posted: Thu Nov 14, 2019 7:38 pm
by Annie Chantasirivisal_4G
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?

Re: Homework 2E.1

Posted: Thu Nov 14, 2019 8:05 pm
by Ellis Song 4I
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.