Which of the following arrangements of p atomic orbitals gives the highest energy $\pi$-antibonding molecular orbital of 1,3-butadiene?

Question

Quizplus · Accepted Answer

The highest energy F1F1F1S1F1F1F10-antibonding molecular orbital is formed by the combination of the three p orbitals that are perpendicular to the molecular plane (the x, y, and z orbitals). In arrangement 3, these three p orbitals are in the correct orientation for maximum overlap and therefore will form the highest energy antibonding orbital. In arrangements 1, 2, and 4, the orientation of the p orbitals is not optimal for overlap, leading to lower energy antibonding orbitals.

Which of the Following Arrangements of P Atomic Orbitals Gives π\piπ

Which of the Following Arrangements of P Atomic Orbitals Gives $\pi$