Q65 · CSIR-NET Chemistry, June 2012
Paper: CSIR-NET June 2012 · Subject: Physical Chemistry · Chapter: Chemical Kinetics · Topic: Chemical Kinetics – General · Marks: 2 · Difficulty: Easy
"Phosphorescence" is represented as
(a)$\mathrm{T}_{1} \rightarrow \mathrm{S}_{0}+\mathrm{hv}$
(b)$\mathrm{T}_{1} \rightarrow \mathrm{S}_{0}+\Delta$
(c)$\mathrm{S}_{1} \rightarrow \mathrm{S}_{0}+\mathrm{hv}$
(d)$\mathrm{S}_{1} \rightarrow \mathrm{T}_{1}+\Delta$
Answer
Answer: A ✓ checked by 4AB · confidence high
The source book printed no answer; this one was worked out and checked — see the explanation.
Explanation
Phosphorescence is radiative decay from the triplet T₁ to the singlet ground state S₀ with emission of a photon.
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