Reaction coordinate

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Notion

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Science and technology

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What Wikipedia says

In chemistry, a reaction coordinate is an abstract one-dimensional coordinate chosen to represent progress along a reaction pathway. Where possible it is usually a geometric parameter that changes during the conversion of one or more molecular entities, such as bond length or bond angle.

Excerpt from the Wikipedia article “Reaction coordinate”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Apcpca, Public domain, via Wikimedia Commons.