Question Bank › Inorganic Chemistry › Coordination Chemistry › ABC26IN0108The electric-dipole allowed transition among the following is · ABC26IN0108 Subject: Inorganic Chemistry · Chapter: Coordination Chemistry · Topic: Coordination Chemistry – General · Exam: CSIR NET 2015 · Marks: 2 · Difficulty: Easy
The electric-dipole allowed transition among the following is
(a) ${ }^{3} \mathrm{S} \rightarrow { }^{3} \mathrm{D}$
(b) ${ }^{3} \mathrm{S} \rightarrow { }^{3} \mathrm{P}$
(c) ${ }^{3} \mathrm{S} \rightarrow { }^{1} \mathrm{D}$
(d) ${ }^{3} \mathrm{S} \rightarrow { }^{1} \mathrm{F}$
Answer Answer: B ✓ checked by 4AB · confidence high
Explanation Electric-dipole selection rules for an atom: ΔS = 0, ΔL = ±1 (and Δl = ±1 for the electron). ³S→³P satisfies both; ³S→³D has ΔL = 2 and ³S→¹D, ³S→¹F change the spin.
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