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
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Answer 1

Answer:

4" (and any subsequent words) was ignored because we limit queries to 32 words