A-level Physics (Advancing Physics)/Energy Levels/Worked Solutions
The following table gives the wavelengths of light given off when electrons change between the energy levels in hydrogen as described in the first row:
|Transition of n||3→2||4→2||5→2||6→2||7→2||8→2||9→2||∞→2|
1. Calculate the potential energy of an electron at level n=2.
2. Calculate the difference in potential energy between levels n=2 and n=3.
This time, let's derive a general formula:
3. What is the potential energy of an electron at level n=3?
4. If an electron were to jump from n=7 to n=5, what would the wavelength of the photon given off be?