Draw MO energy diagrams for the molecular ions H2+ and H2-. Which ion has
the stronger H-H bond?
Since both molecular ions have a bond order of 1/2, they are approximately
Surprisingly, the hybridization of the starred oxygen in the following
molecule is sp2, not sp3. Account for this observation using your
knowledge of extended Π systems.
By adopting an sp2
hybridization, the lone pair in the p
overlap with the adjacent Π
bond. This can be illustrated using an
orbital picture or with resonance structures:
Figure %: Solution