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mass number

number of heavy particles in the atomic nucleus
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mass number

Summary

mass number has Wikipedia articles in 29 language editions, a strong signal of global cultural recognition.[1]

Key Facts

  • mass number is a type of quantity[2].
  • mass number is a type of physical quantity[3].
  • mass number is a type of scalar quantity[4].
  • mass number is a type of count variable[5].
  • mass number's described by source is recorded as ISO 80000-10:2019 Quantities and units — Part 10: Atomic and nuclear physics[6].
  • mass number's different from is recorded as mass[7].
  • mass number's recommended unit of measurement is recorded as 1[8].
  • mass number's counts is recorded as nucleon[9].

Body

Definition and Type

Recorded subclass of include quantity[2], physical quantity[3], scalar quantity[4], and count variable[5].

Why It Matters

mass number has Wikipedia articles in 29 language editions, a strong signal of global cultural recognition.[1] It is known by 20 alternative names across languages and contexts.[10]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [2] ↑ . goldbook.iupac.org. goldbook.iupac.org. Provenance: wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . ISO 80000-10:2019 Quantities and units — Part 10: Atomic and nuclear physics. wikidata.org.
  8. [9] ↑ . wikidata.org.

Aggregate / graph-position facts

  1. [1] ↑ . Wikidata sitelinks. wikidata.org.
  2. [10] ↑ . Wikidata aliases. wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). mass number. Retrieved April 10, 2026, from https://4ort.xyz/entity/mass-number
MLA “mass number.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/mass-number.
BibTeX @misc{4ortxyz_mass-number_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{mass number}}, year = {2026}, url = {https://4ort.xyz/entity/mass-number}, note = {Accessed: 2026-04-10}}
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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 8d ago · Nyuhn · 2026-07-12 view diff on Wikidata ↗
    Subclass of → quantity, physical quantity, scalar quantity +1
    P14541 → 3GirhZ
    Great russian encyclopedia online id (2017) → 2191160
    Counts → nucleon
    + 5 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/41251|batch #41251]]: ZGBK ID"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.