Chapter AS, Problem 25PQ

Interpretation Introduction

Interpretation:

The experiment that infers the existence of discrete energy levels in an atom has to be identified.

Concept Introduction:

Energy is quantized in a system, meaning that system can only have certain energies. This quantized energy absorbed by electron to make transition from one state to other is as follows:

  $\Delta E=h\nu$

Here,

  $\Delta E$ is energy difference between 2 energy states.

  $\nu$ is frequency of radiation absorbed.

  $h$ is planks constant.