Question:
Which of the following molecules will not display an infrared spectrum?
Which of the following molecules will not display an infrared spectrum?
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- Heteronuclear molecules (e.g., CO\(_2\), HCl) show IR activity.
- Homonuclear diatomic gases (e.g., N\(_2\), O\(_2\)) do not absorb IR.
Updated On: Feb 4, 2025
- CO\(_2\)
- N\(_2\)
- Benzene
- HCCH
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The Correct Option is B
Solution and Explanation
Step 1: Understanding infrared activity.
- A molecule absorbs IR radiation if it has a change in dipole moment.
- N\(_2\) is non-polar and does not exhibit IR absorption.
Step 2: Selecting the correct option. Since N\(_2\) lacks a dipole moment, the correct answer is (B).
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