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Discussion

Match each term with what it describes.

List I

A. Bathochromic

B. Hypsochromic

C. Hyperchromic

List II

P. Shift to longer wavelength

Q. Shift to shorter wavelength

R. Increase in intensity

Select the correct match.

  • A.A-P, B-R, C-Q
  • B.A-P, B-Q, C-R
  • C.A-Q, B-P, C-R
  • D.A-R, B-Q, C-P

Answer: B

The pairing is A-P, B-Q, C-R. Two terms describe movement along the wavelength axis and two along the intensity axis, and a real substituent or solvent change usually produces some of each. Having a vocabulary for both axes is what lets a spectral change be described precisely enough for someone else to reproduce the observation.

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