Q126 · CSIR-NET Chemistry, June 2011

Paper: CSIR-NET June 2011 · Subject: Physical Chemistry · Chapter: Molecular Spectroscopy · Topic: Molecular Spectroscopy – General · Marks: 2 · Difficulty: Medium

The Q band in the vibrational spectrum of acetylene is observed in the

(a)C-C stretching mode

(b)C-H symmetric stretching mode

(c)Bending mode

(d)C-H antisymmetric stretching mode

Answer

Answer: C ✓ checked by 4AB · confidence high

Explanation

Acetylene's Q branch appears in its perpendicular (Π) band, which is the bending mode (c).

Study loop for Molecular Spectroscopy

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