Q22 · CSIR-NET Chemistry, June 2013

Paper: CSIR-NET June 2013 · Subject: Physical Chemistry · Chapter: Group Theory · Topic: Character Tables · Marks: 2 · Difficulty: Medium

Identify the Mulliken notation for the following irreducible representation

E	$\mathrm{C}_{\mathrm{n}}$	$\mathrm{nC}_{2}$	i	$\sigma_{\mathrm{h}}$
1	1	-1	-1	-1

(a)$A'_{1u}$

(b)$A_{2 u}^{\prime \prime}$

(c)$B'_{2u}$

(d)$A_{2 u}^{\prime}$

Answer

Answer: B ✓ checked by 4AB · confidence high

Explanation

Symmetric under Cₙ means A; antisymmetric under the C₂′ axes gives subscript 2; σh = −1 gives double prime; i = −1 gives u. The label is A₂u″ (b).

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