The Story so far: MO-LCAO works great for diatomic molecules! We can use hybridization of the central atom and MO-LCAO together to describe small polyatomic molecules. But... What about larger molecules? Does hybridization MO-LCAO enable us to describe more complicated molecules? X1-2MO-LCAO works great for diatomic molecules! But... The Story so far: We can use hybridization of the central atom and MO-LCAO together to describe small polyatomic molecules. Does hybridization / MO-LCAO enable us to describe more complicated molecules? XI-2