Contribution in Formal Charge

Moderators: Chem_Mod, Chem_Admin

Jesus A Cuevas - 1E
Posts: 29
Joined: Fri Apr 06, 2018 11:02 am

Contribution in Formal Charge

Postby Jesus A Cuevas - 1E » Wed May 23, 2018 8:38 am

In the textbook, where it discusses the Correcting of the Covalent Model and the formal charge, they often mention "contribution" but I am not entirely sure what they are referring to in that. For example, in the section Correcting the Covalent Model the book states that because Chlorine has a greater attraction for the (e-) than Hydrogen does in the compound HCl, then the structure with the negative charge on the Chlorine makes a bigger "contribution" than if the negative charge was on the Hydrogen.

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

Re: Contribution in Formal Charge

Postby Chem_Mod » Wed May 23, 2018 9:20 pm

A lewis structure that makes a greater "contribution" to the actual structure is a better representation of the actual structure.

This is referring to modeling a chemical as a blend or compilation of possible Lewis structures. The most stable or more likely structure makes a greater "contribution" to the blend (like with resonance structures).

Posts: 31
Joined: Fri Apr 06, 2018 11:03 am

Re: Contribution in Formal Charge

Postby joannehaddad » Sun May 27, 2018 8:23 pm

It's basically the most stable structure, the one with the lowest energy.

Return to “Formal Charge and Oxidation Numbers”

Who is online

Users browsing this forum: No registered users and 1 guest