Molecular models and selected molecular orbital surfaces and slices were calculated with Spartan for HF, LiH, CO2, XeF2, and BF3, and the results were used by students in an in-class activity (covering several class sessions) to answer a series of questions.
http://firstyear.chem.usyd.edu.au/iChem/lewis.shtml
A set of Flash-based, interactive tools for students to construct Lewis structures for electron deficient, octet rule obeying and hypervalent MLx molecules and ions (x = 2 - 6).
The user chooses the number of electrons and bond type (single, double or triple) and is steered towards the correct stucture.
For cases where resonance structures are possible, the user must construct each form to complete the puzzle.
This learning object was developed collaboratively by members of the IONiC Leadership Council. The overall goal is to provide a general overview of metals in biological systems and introduce students to several of the important ideas in the field of bioinorganic chemistry. Topics include toxic metals, metals used in biological systems and the overlap of these categories; issues associated with the uptake, transport and storage of metal ions; and the benefits gained by using metals in biological molecules.
This is a simple in class exercise to review acid- base equilibria and to lead the students to thinking about metals as both Lewis and Bronsted- Lowry acids. I use it as a discussion starter when I introduce the role of metals in biological acid/base chemistry in my upper division inorganic course, but it can be used at any level once acid-base equilibria has been covered.