Graphical Depiction of the Formation of an H2 Molecule

 

   

This is a depiction of how two H atoms can come together to form a H2 molecule. The colors represent differing electron densities (darker = denser). Note how the bond is formed in the densest region between the two H-nuclei.

 

This is an example of the kind of software available at the CHEMVIZ site. Click on the link NCSA at University of Illinois to construct you rown molecules!