Chemistry 125A: Freshman Organic Chemistry I - Lecture 2: Force Laws, Lewis Structures and Resonance - Professor J. Michael McBride
Lecture 2 - Force Laws, Lewis Structures and Resonance
Professor McBride begins by following Newton's admonition to search for
the force law that describes chemical bonding. Neither direct (Hooke's
Law) nor inverse (Coulomb, Gravity) dependence on distance will do - a
composite like the Morse potential is needed. G. N. Lewis devised a
"cubic-octet" theory based on the newly discovered electron, and
developed it into a shared pair model to explain bonding. After
discussing Lewis-dot notation and formal charge, Professor McBride shows
that in some "single-minimum" cases the Lewis formalism is inadequate
and salvaging it required introducing the confusing concept of
Please recommend us on Facebook, Twitter and more:
Other social media tools
Tell us what you think of Chemistry 2011 -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Chemistry2011 is an informational resource for students, educators and the self-taught in the field of chemistry. We offer resources such as course materials, chemistry department listings, activities, events, projects and more along with current news releases.
The history of the domain extends back to 2008 when it was selected to be used as the host domain for the International Year of Chemistry 2011 as designated by UNESCO and as an initiative of IUPAC that celebrated the achievements of chemistry. You can learn more about IYC2011 by clicking here. With IYC 2011 now over, the domain is currently under redevelopment by The Equipment Leasing Company Ltd.
Are you interested in listing an event or sharing an activity or idea? Perhaps you are coordinating an event and are in need of additional resources?
Within our site you will find a variety of activities and projects your peers have previously submitted or which have been freely shared through creative commons licenses.
Here are some highlights: Featured Idea 1, Featured Idea 2.
Ready to get involved? The first step is to sign up by following the link: Join Here. Also don’t forget to fill out your profile including any professional designations.