In class, we were doing a review on hybridization and how it can give useful information about the nature of reactions. In particular, we looked at C2H4O2. The question was "which oxygen would a metal coordinate with first, the one that has lone pairs that are SP2 hybridized or the ones that has lone pairs SP3 hybridized?" The answer was SP2 because SP2 is more reactive. As reasoning, it was said that SP2 is higher in energy. However, I thought that the more s character an orbital has, the less energy it also has. Any thoughts?