Chapter 8, Problem 8C.14AE

Interpretation Introduction

Interpretation:

The allowed transitions between the terms in the electronic emission spectrum of many electron system has to be stated.

Concept introduction:

The transitions between the terms that follow the selection rule are said to be allowed transitions.  If any of the selection rules is not followed then that transition is not an allowed transition.  The selection rules for the allowed transitions are shown below.

    $\Delta S=0$, $\Delta L=0,\pm 1$, $\Delta J=0,\pm 1$