Question

which one of the following is false for IR spectroscopy ?
1. conjunction decrease the >c=0 stretching frequency
2. Frequency is higher if alicyclic ring contain >c=0 group
3. Electron releasing groups or substituent decrease frequency of >c=0 band
4.Electron with drawing substituents decrease the frequency of >c=0 band​

plz say right ans​

Answer 1

Answer:

refer the attachment file mate!☺