Chapter 14, Problem 14.2YT

Interpretation Introduction

Interpretation:

The location of every nodal plane perpendicular to the bond axes in each MO is to be indicated in figure $\text{14-5}$.

Concept introduction:

Nodes are indicated by vertical dashes lines. For a linear system of conjugated p orbitals, all nodal planes in a resulting $\text{π}$ MO must be positioned symmetrically about the center of that set of p orbitals.

The lowest-energy $\text{π}$ MO, called ${\text{π}}_{\text{1}}$, has no nodal planes.