Question: 8. Fluorescence occurs when A. a molecule returns to the electronic ground state from an excited triplet state by losing it's excess energy as a

8. Fluorescence occurs when A. a molecule returns to the electronic ground state from an excited triplet state by losing it's excess energy as a photon B. a molecule returns to the electronic ground state from an excited singlet state by losing it's excess energy as a photon C. a molecule lowers its vibrational energy by losing it's excess energy as a photon D. none of the above

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