Question

Select the correct diagram for the ${\pi }^{\ast }2p_y$ - orbital:

• A.
• B.
• C.
• D.

Answer 1

The correct option is D

Throughout this chapter, you will encounter a lot of pure $p-$ orbitals. They are involved in back-bonding or in $\pi$ bond formation (or even delocalization as in the case of benzene). For (\pi^\ast~2p_y\) - orbital, the orbitals should be out of phase. Since the bond is a $\pi$ bond, the overlap cannot be axial. Hence the answer.