Subject: Physical Chemistry · Chapter: Molecular Spectroscopy · Topic: Molecular Spectroscopy – General · Exam: CSIR-NET DEC 2011 · Marks: 2 · Difficulty: Medium
The sodium D lines are due to ${}^{2}P_{1/2} \rightarrow {}^{2}S_{1/2}(\Delta E_1)$ and ${}^{2}P_{1/2} \rightarrow {}^{2}S_{1/2}(\Delta E_2)$ transitions. The splitting due to spin-orbit coupling in ${}^{2}p$ state of the sodium atom is
(a)$\Delta E_2+\Delta E_1$
(b)$\Delta E_2-\Delta E_1$
(c)$\dfrac{\Delta E_2+\Delta E_1}{2}$
(d)$\dfrac{\Delta E_2-\Delta E_1}{2}$
Answer
SELF-PRACTICE — the source book printed no answer.
Nothing is invented here, so this question has no answer on record.