This question already has an answer here:
- Necessary photon energy for electronic excitation 1 answer
- What is the meaning of natural line broadening? 3 answers
- If translational energy is a continuum, why molecules don't absorb any energy quantity? 1 answer
- Can an electron absorb a photon even if it exceeds the energy required for the electron to jump up an energy level? 1 answer
In a problem sheet there was a question asking us to guess why a photon released from an electron dropping energy levels does not have the exact difference.
My guess is that the electron needs some small amount of energy to actually drop from its excited state to the lower state, but I have no concrete explanation. Why is this the case?