AP Chemistry
3.12 Properties of Photons
3.11 Spectroscopy and the Electromagnetic Spectrum
A student investigates how different regions of the electromagnetic spectrum interact with matter. The student considers three processes, each induced by the absorption of a single photon:
Which of the following correctly ranks the minimum photon energy required to induce each process, from greatest to least?
| Process | Phenomenon Induced by Photon Absorption |
|---|---|
| Process 1 | Ejection of an inner-shell (core) electron from an atom |
| Process 2 | Increase in the vibrational motion (stretching) of a covalent bond |
| Process 3 | Increase in the rotational motion of a molecule |
Which of the following correctly ranks the minimum photon energy required to induce each process, from greatest to least?
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