Chapter 11, Problem 11A.11AE

(i)

Interpretation Introduction

Interpretation:

The lifetime of a state which gives a line of width $0.20{\text{cm}}^{-\text{1}}$ has to be calculated.

Concept introduction:

The Heisenberg uncertainty principle gives the relation between the energy of the molecule and its lifetime.  The Heisenberg Uncertainty principle for time and energy is given by the formula shown below.

  $\delta E\times \delta t=\frac{h}{\text{2π}}$

(ii)

Interpretation Introduction

Interpretation:

The lifetime of a state which gives a line of width $2.0{\text{cm}}^{-\text{1}}$ is to be calculated.

Concept introduction:

As mentioned in the concept of introduction in part (i).