Worksheet: Microwave Spectra of Diatomics

In this worksheet, we will practice calculating diatomic rotational constants from the P, Q, and R branches of microwave spectra.

Q1:

Which of the following molecules will not exhibit a microwave rotational absorption spectrum?

  • ACl2
  • BHBr
  • CHCN
  • DHO2

Q2:

Which of the following molecules will not exhibit a microwave rotational absorption spectrum?

  • AHCl
  • BCHCl3
  • CCO2
  • DHO2

Q3:

An absorption spectrum for the diatomic molecule hydrogen iodide (HI) appears in the microwave region. Which transitions are most likely responsible for this spectrum?

  • APure rotational transitions
  • BPure vibrational transitions
  • CMore information is needed.
  • DElectronic transitions

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