Integrated SequencePhysics Chemistry Organic Biology

Web Resources

Chem1 Virtual Textbook - Introduction to molecular orbitals
Well-written and well-illustrated tutorial.

Purdue University - Molecular Orbital Theory
Comprehensive, well-illustrated discussion.

  click if a link is broken

Special points of emphasis

Atomic Theory

The Chemical Bond

In Atomic Theory, we learned how atomic orbitals were solutions to the Schroedinger wave equation for electrons within an atom. However, electrons in chemical bonds are influenced by the attractive forces of more than one nuclei. In terms of quantum electrodynamics, the orbital wave functions appropriate to the situation are molecular orbitals, orbital functions that extend over more than one atom.

Molecular orbital theory approximates the electronic states that are solutions of the molecular Schroedinger equation, descriptions of the motion of an electron within the electrodynamic environment provided by the nuclei and the other electrons

The discussion above is designed to help make things more coherent, not scare you about the test. The MCAT does not expect you to have mastered advanced molecular orbital theory or have experience working with the Schroedinger wave equation. If you see orbital theory on the MCAT, most likely the questions will be easier than the passage.

The WikiPremed MCAT Course is a free comprehensive course in the undergraduate level general sciences. Undergraduate level physics, chemistry, organic chemistry and biology are presented by this course as a unified whole within a spiraling curriculum.

Please read our policies on privacy and shipping & returns.  Contact Us.
MCAT is a registered trademark of the Association of American Medical Colleges, which does not endorse the WikiPremed Course.

Creative Commons License
The work of WikiPremed is published under a Creative Commons Attribution Share Alike 3.0 License. There are elements of work here, such as a subset of the images in the archive from WikiPedia, that originated as GNU General Public License works, so take care to follow the unique stipulations of that license in printed reproductions. You can use the resources here for commercial or non-commercial purposes, but please give attribution and a link to the production credits and edit history of the resource. For the works here which began as my individual work, please attribute "John Wetzel, an author at".