Chapter 15.3, Problem 15.4.2PE

(a)

Interpretation Introduction

To determine:If $\text{ΔE}$ in the transition of electron in the hydrogen atom from $n=\text{4}$ to $n=\text{9}$ is positive or negative.

(b)

Interpretation Introduction

To determine:The wavelength in the transition of electron in the hydrogen atom from $n=\text{4}$ to $n=\text{9}$ ; If the light will be absorbed or emitted.

(c)

Interpretation Introduction

To determine:Theregion of calculated wavelenght of part (b) in the electromagnetic spectrum.