Mass excess

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Notion

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Science and technology

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What Wikipedia says

The mass excess of a nuclide is the difference between its actual mass and its mass number multiplied by the atomic mass unit (dalton). It is one of the predominant methods for tabulating nuclear mass.

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

Image: Nicolas Soppera et al., OECD / NEA Data Bank and Roderich Kahn, CC BY-SA 4.0, via Wikimedia Commons.