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06.07.2022 - 05:37

How many normal modes of vibration are there for an HC-C-C-CH molecule?

Question:

How many normal modes of vibration are there for an {eq}HC equiv C-C equiv CH {/eq} molecule?

Answers (1)

Louise April 14, 2023 в 04:12

There are three normal modes of vibration for an {eq}HC equiv C-C equiv CH {/eq} molecule. A normal mode of vibration in a molecule refers to the way the atoms move relative to each other under certain conditions. In the case of the {eq}HC equiv C-C equiv CH {/eq} molecule, there are three types of motion that can occur: 1) symmetric stretching - where the two carbon atoms move away from each other while the hydrogen atoms remain stationary; 2) antisymmetric stretching - where the two carbon atoms move away from each other while the hydrogen atoms move towards each other; 3) bending - where the molecule bends in a V-shaped shape. Each of these three types of motion represents a normal mode of vibration, meaning they occur at specific frequencies and can be observed experimentally. Therefore, the {eq}HC equiv C-C equiv CH {/eq} molecule has three normal modes of vibration.

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