वह कार्बनिक यौगिक जो 3314 cm-1 और 2126 cm-1 दोनों पर विशिष्ट IR अवशोषण बैंड दिखाता है, वह है:

Arrange the following functional groups/compounds in increasing order of their infrared (IR) absorption wavenumber (νmax) for the carbonyl (C=O) stretch: (i) 2-Cyclohexenone (Conjugated ketone) (ii) Cyclobutanone (iii) Cyclopentanone (iv) Cyclohexanone

The carbonyl stretching frequency of an acetamide molecule in IR spectra would be approximately __________.