I use this in-class exercise after I have taught the students how to construct LGOs using the generator orbital technique.  The previous week, they do an in-class exercise on that topic, and this week, they use the LGOs from the previous week to construct MO diagrams.

This Lewis structure and VSEPR problem is based on a paper from Inorganic Chemistry in 2010 reporting the crystal structure of the carbonyl diazide molecule.  This relatively simple molecule provides an interesting application of the predictive powers of Lewis structures and VSEPR theory to molecular structure, backed up by experimental data on bond distances and bond angles.  Before tackling carbonyl diazide, the students warm up by considering the structures of hydrogen azide and the isolated azide ion.  The reference to the original paper is

This is an In class exercise on the subject of Ligand Field theory.  It reviews nomenclature and introduces ideas of ligand field splitting and spin in transition metal complexes.  It includes both a worksheet for classroom use, a worksheet key which includes some information not on the student worksheet .

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.

This in-class activity was used on the first day of Advanced Inorganic Chemistry in lieu of lecture to review symmetry operations and point groups in small molecules.  The learning object was adapted to a small group discussion format from a fundamental quiz posted by Barbara Reisner (James Madison University) and a problem set question posted by Adam Johnson (Harvey Mudd College).