ABC26PH0004 · Atomic and Molecular Term Symbol

Subject: Physical Chemistry · Chapter: Atomic and Molecular Term Symbol · Topic: Selection Rules · Exam: CSIR-NET DEC 2011 · Marks: 2 · Difficulty: Easy

Observe the following electronic transition of a diatomic molecule.
\[ \begin{array}{l} \text{(A)}\ { }^{1}\Sigma_{g}^{+} \rightarrow { }^{3}\Sigma_{g}^{+} \\ \text{(B)}\ { }^{1}\Sigma_{u}^{+} \rightarrow { }^{1}\Sigma_{g}^{+} \\ \text{(C)}\ { }^{1}\Delta_{u} \rightarrow { }^{1}\Sigma_{g}^{+} \\ \text{(D)}\ { }^{1}\Pi_{g} \rightarrow { }^{1}\Sigma_{u}^{+} \end{array} \]
The allowed transitions are
(a)(A) and (C) only
(b)(B) and (D) only
(c)(A), (B) and (C) only
(d)(A), (C) and (D) only
Answer
Answer (as printed): B
Explanation
No explanation was printed for this question.

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