Lewis Structures

Drawing Lewis Structures is something we learned how to do in Gen Chem. Nothing has changed since then, but now since we know about bonding preferences, that makes it a lot easier. 

Lewis Structure Rules

*You might have learned a slightly different version, but this is close enough, you get the point.

In this example, we were left with a separation of charges (+ next to -), so we rearranged the σ-framework to see if we could remove them.

  • This is a process of trial and error. Don’t be afraid to draw the wrong structure at first!

Example: Draw the Lewis Structure for the following molecule:

6m

Example: Draw the Lewis Structure for the following molecule:

4m

Like the new method? Prefer the old one instead? Feel free to use whichever method you like more. As long as you get the right answer on the exam, that’s all I care about.