The ir spectrum of which type of compound will not show evidence of hydrogen bonding?

The IR spectrum of aldehyde compound will not show evidence of hydrogen bonding. The Infrared (IR) spectrum involves the interaction of infrared radiation with matter. It is used to study and identify chemicals and their properties.  Evidence of hydrogen bonding is not shown due to lack of molecular contact.

Hope the image of the frequency formula

Ibelieve it is b. proton.hope my answer has you : )