These questions are to help you find out how much you remember from your early college days...

1. Write down the Lewis dot structures for the following molecules:

nitrite anion, sulfite anion, nitrous oxide, sulfur trioxide
Derive the shape of the above molecules using VSEPR.

2. Draw the shapes of s,p and d orbitals. Neatly label the axes and indicate the phase clearly.  
3. Derive using the Krishnamurthy and Schaap approach the CF splitting in a square antiprism.
4. Derive the MO energy level diagram for NO. Sketch the HOMO.