chapt 23B | 暗記メーカー

暗記メーカー

chapt 23B

10問 • 8ヶ月前

問題一覧

1

Why is Rayleigh scattering more intense than both Stokes and anti-Stokes Raman scattering?

C) Rayleigh scattering is an elastic process with no energy loss

2

Which of the following statements best explains the appearance of P and R branches but no Q branch in the vibrational- rotational infrared spectrum of a diatomic molecule?

B) The selection rule for rotational transitions is AJ=±1

3

In UV-Vis spectroscopy, what is typically responsible for the broadness of absorption bands in polyatomic molecules?

B) Coupling of electronic transitions with vibrational and rotational levels

4

In the infrared spectrum of a polyatomic molecule, more vibrational modes are observed than predicted for a diatomic molecule. This is primarily because:

C) Polyatomic molecules can undergo both stretching and bending vibrations

5

In Mössbauer spectroscopy, what physical phenomenon allows for the detection of small changes in nuclear energy levels?

C) Recoil-free gamma-ray resonance absorption

6

Which of the following best describes a photochemical reaction quantum yield greater than 1?

B) Chain reactions lead to multiple product molecules per photon absorbed

7

Which of the following is a major challenge in interpreting the vibrational spectrum of a large polyatomic molecule?

C) The presence of anharmonic coupling and mode mixing

8

In the hydrogen atom, the energy difference * between adjacent levels decreases as n increases because:

C. The energy levels become more closely spaced at high n

9

Which energy diagram sequence correctly represents the Jablonski diagram for a typical molecule undergoing fluorescence?

C. SO S1→SO

10

Franck-Condon principle explains the relative intensities of vibronic transitions in electronic spectra. According to this principle, the most intense transitions occur between:

C) Vibrational levels with the greatest nuclear displacement overlap

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問題一覧

1

Why is Rayleigh scattering more intense than both Stokes and anti-Stokes Raman scattering?

C) Rayleigh scattering is an elastic process with no energy loss

2

Which of the following statements best explains the appearance of P and R branches but no Q branch in the vibrational- rotational infrared spectrum of a diatomic molecule?

B) The selection rule for rotational transitions is AJ=±1

3

In UV-Vis spectroscopy, what is typically responsible for the broadness of absorption bands in polyatomic molecules?

B) Coupling of electronic transitions with vibrational and rotational levels

4

In the infrared spectrum of a polyatomic molecule, more vibrational modes are observed than predicted for a diatomic molecule. This is primarily because:

C) Polyatomic molecules can undergo both stretching and bending vibrations

5

In Mössbauer spectroscopy, what physical phenomenon allows for the detection of small changes in nuclear energy levels?

C) Recoil-free gamma-ray resonance absorption

6

Which of the following best describes a photochemical reaction quantum yield greater than 1?

B) Chain reactions lead to multiple product molecules per photon absorbed

7

Which of the following is a major challenge in interpreting the vibrational spectrum of a large polyatomic molecule?

C) The presence of anharmonic coupling and mode mixing

8

In the hydrogen atom, the energy difference * between adjacent levels decreases as n increases because:

C. The energy levels become more closely spaced at high n

9

Which energy diagram sequence correctly represents the Jablonski diagram for a typical molecule undergoing fluorescence?

C. SO S1→SO

10

Franck-Condon principle explains the relative intensities of vibronic transitions in electronic spectra. According to this principle, the most intense transitions occur between:

C) Vibrational levels with the greatest nuclear displacement overlap