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Formal Charge

Posted: Tue Nov 12, 2019 8:55 pm
by Aedra Li 3H
Is there a more organized way to write the formal charge? It sometimes gets messy and confusing when I have all these numbers around my Lewis Structure.

Re: Formal Charge

Posted: Tue Nov 12, 2019 9:14 pm
by Tai Metzger 3K
You can always write them to the side as long as long as you specify which formal charge goes with each atom.

Re: Formal Charge

Posted: Tue Nov 12, 2019 9:17 pm
by SVajragiri_1C
You can underline the formal charges or something to distinguish them from the atom and the electron dots.

Re: Formal Charge

Posted: Wed Nov 13, 2019 11:47 am
by 305421980
I always do the calculations on the side just to show my work then write the final numbers small in a small box or underlined by the atoms.

Re: Formal Charge

Posted: Wed Nov 13, 2019 3:37 pm
by simmoneokamoto3K
I tend to do it on a separate piece of paper and by the end of it, I box the entire lewis structure and write the overall formal charge in the upper right corner of said box.

Re: Formal Charge

Posted: Fri Nov 15, 2019 9:44 pm
by Megan_1F
I would recommend writing it small right next to each atom so you can make sure you know which formal charge is assigned to which atom.

Re: Formal Charge

Posted: Fri Nov 15, 2019 11:37 pm
by Michelle Chan 1J
A side question: is there a way to tell just by looking because some people derive it really quickly in their head. Just wondering.

Re: Formal Charge

Posted: Fri Nov 15, 2019 11:41 pm
by madijohnson_4A
I'm not sure how people do formal charge so quickly in their heads, I always need to write it out personally, but the ones I've memorized are:
double bonded oxygen with 2 lone pairs has a formal charge of 0
single bonded oxygen with 3 long pairs has a formal charge of -1
I hope this helps a little!

Re: Formal Charge

Posted: Sat Nov 16, 2019 12:29 am
by Amanda Lin 2I
Oxygen with two bonds has a formal charge of 0.
Nitrogen with three bonds has a formal charge of 0.
Carbon with four bonds has a formal charge of 0.

Re: Formal Charge

Posted: Tue Nov 26, 2019 11:42 am
by Merin Padayatty 3G
I write the calculations on the side and write the final answer next to each atom.