Concept explainers
The maximum energy a photon can have when an electron in an excited hydrogen atom drops through energy levels.
To determine what happens if the same amount of energy is given to the atom in the ground state.
Answer to Problem 47A
The maximum energy of photon emitted is
If
Explanation of Solution
Given:
An electron in an excited hydrogen atom drops through energy levels.
Formula used:
In the line spectrum of hydrogen, the lowest energy level has an energy
Calculation:
For the photon to have maximum energy, the electron makes a transition from the infinity level (
The energy of the infinity level is
So, the maximum energy of the photon is
The ionization energy for hydrogen happens to be
Therefore, if
Conclusion:
The maximum energy of photon emitted is
If
Chapter 28 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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