Q65 · CSIR-NET Chemistry, June 2011

Paper: CSIR-NET June 2011 · Subject: Inorganic Chemistry · Chapter: Coordination Chemistry · Topic: Electron Transfer Redox · Marks: 2 · Difficulty: Medium

The term symbol of a molecule with electronic configuration: $(1\sigma_{g})^{2}(1\sigma_{u})^{2}(2\sigma_{g})^{2}(2\sigma_{u})^{2}(1\pi_{u})^{1}(1\pi_{u})^{1}$ is:
(a)$^{1}\Sigma_{g}^{+}$
(b)$^{3}\Sigma_{g}^{-}$
(c)$^{1}\Sigma_{g}^{-}$
(d)$^{3}\Sigma_{g}^{+}$
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
(πu)² with parallel spins: ³Σg⁻ (b).

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