Discussion
A bathochromic shift is a movement of an absorption band to
Answer: A
Correct answer: longer wavelength
A bathochromic shift, also called a red shift, moves a band to longer wavelength and therefore to lower energy. The opposite, to shorter wavelength, is hypsochromic or blue. The intensity changes have their own names: hyperchromic for an increase and hypochromic for a decrease. Extending conjugation is the commonest cause of a bathochromic shift.
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