The most important are π orbitals as they are lower in energy than σ orbitals and the carbonyl group (C=O) is the most important of these—indeed it is the most important functional group of all. ~Clayden, Chapter 5
Why is it that Carbonyl Groups in organic chemistry are given so much importance? I am still in highschool, and at this level every book (like Peter Sykes, Solomon, Clayden) or my teachers, all talk about how Carbonyl compounds are the most important. But why is it? Why are they given so much importance?