Chapter 8, Problem 8C.9P

Interpretation Introduction

Interpretation:

The wavenumbers of the first three lines of Balmer series of positronium has to be predicted.  The binding energy of the ground state of positronium has to be calculated.

Concept introduction:

Rydberg equation is used to represent the wavenumber or wavelength of the lines present in the atomic spectrum of an element.  The Rydberg equation for the hydrogen atom is represented by the expression shown below.

  $\overline{\nu }=R\left(\frac{1}{n_{\text{f}}^2}-\frac{1}{n_{\text{i}}^2}\right)$

Where,

• $R$ represents Rydberg constant.
• $n_{\text{i}}$ represents the initial energy level.
• $n_{\text{f}}$ represents the final energy level.