Several optical spectroscopies have been studied. A) In a general potential ener

Question

Several optical spectroscopies have been studied.

A) In a general potential energy diagram for a diatomic molecule show a typical transition measured by each spectroscopy (label clearly).

B) What is the Born-Oppenheimer Approximation? What is meant by a Franck-Condon transition?

C)Describe each spectroscopy in sequence from lowest energy transitions to highest, and in so doing:

i) Tell what molecular property/properties is/are being measured.

ii) Give the selection rule and energy expression for a transition for a diatomic molecule when possible. If there is no specific selection rule, briefly explain what can be done to assess whether a transition is observable.

iii) Explain what information can be obtained from the spectroscopy and how it is obtained, i.e. what relationships are needed to analyze the spectrum for this information. Explicit forms of the energy should be stated for each spectroscopy.

Explanation / Answer

B.

Born-Oppenheimer Approximation

It is the assumption that the motion of atomic nuclei and electrons in a molecule can be separated.

Franck-Condon transition

The principle states that during an electronic transition, a change from one vibrational energy level to another will be more likely to happen if the two vibrational wave functions overlap more significantly.

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.