The fourth valence electron of carbon remains in its p-orbital
and forms a p-bond with oxygen by overlap with p-orbital of an oxygen In addition, the oxygen atom also has two non bonding electron pairs Thus, the carbonyl carbon and the three atoms attached to it lie in the
same plane and the p-electron cloud is above and below this plane The
bond angles are approximately 120° as expected of a trigonal coplanar
structure (Figure 8