FORMAL CHARGE


Moderators: Chem_Mod, Chem_Admin

april_bussey_1C
Posts: 30
Joined: Fri Apr 06, 2018 11:02 am

FORMAL CHARGE

Postby april_bussey_1C » Sun May 13, 2018 10:24 pm

When trying to figure out the formal charge of a bond, how do we know the amount of loan pair electrons?

Chem_Mod
Posts: 16977
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 364 times

Re: FORMAL CHARGE

Postby Chem_Mod » Sun May 13, 2018 10:27 pm

Formal charge of the "atom" will depend on the number of lone pair electrons and bonding electrons you assigned for your Lewis structure.

april_bussey_1C
Posts: 30
Joined: Fri Apr 06, 2018 11:02 am

Re: FORMAL CHARGE

Postby april_bussey_1C » Sun May 13, 2018 10:44 pm

Okay, sorry i'm getting used to the terms for this chapter. So, the lone pair electrons would be the electrons not shared with another atom (on the lewis structure it would be the dots on the outside of the element letters right)?

sylvie_1D
Posts: 31
Joined: Fri Apr 06, 2018 11:04 am

Re: FORMAL CHARGE

Postby sylvie_1D » Sun May 13, 2018 10:45 pm

I find that drawing out the electron configuration helps give a good visual on how many lone pairs there are.

Bianca Nguyen 1B
Posts: 36
Joined: Fri Apr 06, 2018 11:04 am

Re: FORMAL CHARGE

Postby Bianca Nguyen 1B » Sun May 13, 2018 10:46 pm

Also, I believe the amount of lone pair electrons will be the electrons on an atom that are not shared through bonds.

Bianca Nguyen 1B
Posts: 36
Joined: Fri Apr 06, 2018 11:04 am

Re: FORMAL CHARGE

Postby Bianca Nguyen 1B » Sun May 13, 2018 10:47 pm

Yes, I think they are the dots!

octaviahuang1f
Posts: 30
Joined: Fri Apr 06, 2018 11:03 am

Re: FORMAL CHARGE

Postby octaviahuang1f » Sun May 13, 2018 10:50 pm

Yes, I agree that the lone pairs are the dots surrounding that letter. If you subtract the valence electron by these lone pairs and 1/2 the bonding electrons, you get the formal charge. Hope this helps!

Maria Roman 1A
Posts: 30
Joined: Fri Apr 06, 2018 11:04 am

Re: FORMAL CHARGE

Postby Maria Roman 1A » Tue May 15, 2018 12:29 am

the lone pair electrons would be the dots

Jessica Lancisi - 1I
Posts: 29
Joined: Fri Apr 06, 2018 11:03 am

Re: FORMAL CHARGE

Postby Jessica Lancisi - 1I » Wed May 16, 2018 4:08 pm

Can the lone pair electrons also be shown as lines on the sides of the atom?

Neha Divi 1K
Posts: 31
Joined: Fri Apr 06, 2018 11:02 am

Re: FORMAL CHARGE

Postby Neha Divi 1K » Wed May 16, 2018 5:36 pm

The lines represent a bond between two atoms. Drawing a line on atom to represent a lone pair would not represent what the structure actually looks like since there is no bond. So when drawing lone pairs, just use the dots.


Return to “Formal Charge and Oxidation Numbers”

Who is online

Users browsing this forum: No registered users and 1 guest