Exam-style question
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Given an atomic energy-level diagram, if the energy difference between level 1 and level 2 is 3.0 eV, what is the wavelength of the emitted photon when an electron transitions from level 2 to level 1? (Use the formula E = hf and c = fλ).
Model answer
What a good answer should say
- The wavelength of the emitted photon is 413 nm.
Explanation
Why this works
This question tests the application of the energy-wavelength relationship in photon emission. By calculating the wavelength from the energy difference, students demonstrate their understanding of the connection between energy levels and emitted radiation.
Common mistake
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