Steps to obtain the bonding description in a molecule.
1.Write the Lewis structure of the molecule.
2.From Lewis structure, use VSEPR model to obtain the arrangement of electron groups about the central atom.
3.From the geometric arrangement of the electron groups, deduce the type of hybrid orbitalson the central atom (see table 4.5)
4.Assign electrons to the hybrid orbitalsof the central atom one at the time, pairing them only when necessary. (Use Hund’srule)
5.Form bonds to this central atom by overlapping singly occupied orbitalsof other atoms with the singly occupied hybrid orbitalsof the central atom.