A new thermochemical scale provides a more accurate way to measure electronegativity
In short: Researchers who analyzed the fundamental properties of the 118 known elements found that the standard way of measuring electronegativity contains flaws. By identifying these issues and refining the underlying definition, the team developed a new thermochemical scale that uses dimensionless numbers to describe how atoms attract electrons.
This new scale provides a more intuitive representation of chemical trends across the entire periodic table. While the previous Pauling scale is widely used to explain molecular stability and bond polarity, the researchers' updated version offers an improved description of thermochemistry. The study involved a systematic re-evaluation of thermochemical data to correct existing scale drawbacks.
A primary limitation of this work is that it focuses on refining a theoretical scale based on existing thermochemical data rather than providing new experimental measurements for every individual element.
Why it matters: Refining the way we measure how atoms attract electrons leads to a more accurate understanding of how molecules and solids are built.
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Sources
- Source: Research: Tantardini and (2021). Thermochemical electronegativities of the elements. Nature Communications. · cc-by
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