---
title: "A student analyzes a gaseous sample of hydrogen chloride, \\(\\text{HCl}\\), using an absorption spectrometer. When the sample absorbs photons in the infrared (\\(\\text{IR}\\)) region of the electromagnetic spectrum, which of the following types of molecular transitions is primarily induced?"
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date_modified: "2026-08-23T05:04:32+00:00"
---

# A student analyzes a gaseous sample of hydrogen chloride, \(\text{HCl}\), using an absorption spectrometer. When the sample absorbs photons in the infrared (\(\text{IR}\)) region of the electromagnetic spectrum, which of the following types of molecular transitions is primarily induced?

A student analyzes a gaseous sample of hydrogen chloride, \(\text{HCl}\), using an absorption spectrometer. When the sample absorbs photons in the infrared (\(\text{IR}\)) region of the electromagnetic spectrum, which of the following types of molecular transitions is primarily induced?

- **A.** Ejection of core electrons from the chlorine atoms
- **B.** Transitions of valence electrons between electronic energy levels
- **C.** Transitions between molecular vibrational energy levels
- **D.** Transitions between molecular rotational energy levels

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/121455/*