Parenthesis for Ions' Lewis Structures

Moderators: Chem_Mod, Chem_Admin

Xingzheng Sun 2K
Posts: 62
Joined: Fri Sep 28, 2018 12:29 am

Parenthesis for Ions' Lewis Structures

Postby Xingzheng Sun 2K » Tue Nov 06, 2018 10:06 am

In the answer key, I found that when we draw a Lewis structure for an ion, we need to put parenthesis after drawing the diagram and the write the charge on the up right corner. I wonder if it is a necessary step or just a better representation?

EllerySchlingmann1E
Posts: 76
Joined: Fri Sep 28, 2018 12:24 am

Re: Parenthesis for Ions' Lewis Structures

Postby EllerySchlingmann1E » Tue Nov 06, 2018 10:09 am

It is a necessary step for the purposes of drawing a correct Lewis structure. If the ion is not bracketed with its charge then there can be significant confusion about the charge of the ion as well as the formal charges of the atoms in the ion. It is best to always put the brackets and denote charge.

Nicoline Breytenbach 3D
Posts: 46
Joined: Fri Sep 28, 2018 12:26 am
Been upvoted: 1 time

Re: Parenthesis for Ions' Lewis Structures

Postby Nicoline Breytenbach 3D » Tue Nov 06, 2018 1:36 pm

It is a necessary step, and if on a test you were to leave off the brackets and charge in your answer you would likely be docked points. It also helps when drawing the lewis structure of a salt which contains two or more ions, since the different ions must be separated by brackets to obtain the correct lewis structure.


Return to “Lewis Structures”

Who is online

Users browsing this forum: No registered users and 2 guests