Lecture 2 - Force Laws, Lewis Structures and Resonance
recorded by: Yale University
published: June 9, 2010, recorded: September 2008, views: 5145
released under terms of: Creative Commons Attribution No Derivatives (CC-BY-ND)
See Also:
Download yalechem125f08_mcbride_lec02_01.mov (Video - generic video source 534.3 MB)
Download yalechem125f08_mcbride_lec02_01.flv (Video 604.9 MB)
Download yalechem125f08_mcbride_lec02_01_640x360_h264.mp4 (Video 150.4 MB)
Related content
Report a problem or upload files
If you have found a problem with this lecture or would like to send us extra material, articles, exercises, etc., please use our ticket system to describe your request and upload the data.Enter your e-mail into the 'Cc' field, and we will keep you updated with your request's status.
Description
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 "resonance."
Problem sets/Reading assignment:
Reading assignments, problem sets, PowerPoint presentations, and other resources for this lecture can be accessed from Professor McBride's on-campus course website, which was developed for his Fall 2008 students. Please see Resources section below.
Resources:
Link this page
Would you like to put a link to this lecture on your homepage?Go ahead! Copy the HTML snippet !
Write your own review or comment: