A functional group capable of having characteristic electronic transitions which

Question

A functional group capable of having characteristic electronic transitions which give rise to an absorption is called a____. Electron-withdrawing groups exert no influence on the position of the ____absorption band of aromatics. Mono substituted benzene derivatives exhibit two strong IR absorption band: ___cm^-1. In CH_3 CHBr C_2 CH_3, there are ___types of protons and___^1H NMR signals. The magnetic field experienced at the nucleus depends on the amount of electron density around the atom. The more electron density present, the ___the shift in the spectrum. In CH_3 CH_2 COOCH_2 CH_3, there are ___types of carbon atoms and____^13C NMR signals. Molecules containing atoms limited to C, H, O, N, S, X, P of even-numbered molecular weight contain ____number of N. An organic compound can have one of the following structures: The observed A_max of the compound is 235 nm. Which is the most likely structure of the compound?____

Explanation / Answer

1. Chromophore is the functional group capable of having characteristic electronic transition which give rise to absorption. The structural or electronic changes in the chromophore can be quantified and used to predict shifts in the observed electronic transitions.

2. Electron-withdrawing group exert no influence on the position of the secondary absorption band.

3. 690 - 750 cm-1

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