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← ScienceWhich mechanism induces spontaneous emission when an electron transitions between orbitals?
A)Vacuum fluctuation influencing dipole moment✓
B)Nuclear spin coupling modulation
C)Stochastic collisional excitation
D)Phonon-mediated vibronic relaxation
💡 Explanation
Spontaneous emission occurs through the influence of vacuum fluctuations on the electron's dipole moment; this is quantum electrodynamics. Because orbitals have inherent uncertainty in energy, transition occurs even without external perturbation, therefore emission occurs, rather than other relaxation given stationary conditions.
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