Chemistry · Spectroscopy - IR
Which of the following molecular vibrational modes does NOT show an infrared (IR) absorption band?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Symmetric CO2 stretch✓
- 2Antisymmetric CO2 stretch
- 3Symmetric O=C=S stretch
- 4CH3-C≡C-H stretch
Correct answer
Symmetric CO2 stretch
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