iron-55

artificial radioisotope of iron

Class type of: iron Q2015910

Facts

11 properties

Instance of: isotope of iron
Subclass of: iron^[2]
Atomic number: 26.0^[4]
Binding energy: 481062.725^[10]
Decays to: manganese-55^[3]
Half-life: 2.744^[9]
Mass: 54.938291283^[8]
Mass excess: -57481.3^[11]
Neutron number: 29.0^[7]
Parity quantum number: -1.0^[6]
Spin quantum number: 1.5^[5]

🏷️ Also known as

en 55Fe en iron-55 en Fe-55 ar حديد-55 cs Železo-55 da Jern-55 de Eisen-55 es hierro-55 fa آهن-۵۵ fr Fe-55 fr 55Fe fr fer 55 it ferro-55 ja 55Fe ja Fe-55 ja 鉄55 nl ijzer-55 ru железо-55 uk залізо-55 zh 鐵-55

🔖 Identifiers · 4

Freebase ID: /m/05_fk7x
ProofWiki ID: Definition:Iron/55
ScienceDirect topic ID: medicine-and-dentistry/iron-55, nursing-and-health-professions/iron-55, pharmacology-toxicology-and-pharmaceutical-science/iron-55
Wolfram Language entity code: Entity["Isotope", "Iron55"]

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🔗 Connections

Instance of 1

isotope of iron

Subclass of 1

iron

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Summary

iron-55 is an isotope of iron^[1].

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isotope of manganese

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🌐 Available in 6 languages

enIron-55 csŽelezo-55 esHierro 55 faآهن-۵۵ nlIJzer-55 ukЗалізо-55

References

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

Direct Wikidata claims

[2] ↑ iron-55 — subclass of (P279): iron. wikidata.org.
[3] ↑ iron-55 — decays to (P816): manganese-55. NuDat. Retrieved 2015-11-09. nndc.bnl.gov. Provenance: wikidata.org.
[4] ↑ iron-55 — atomic number (P1086): {'amount': '+26'}. wikidata.org.
[5] ↑ iron-55 — spin quantum number (P1122): {'amount': '+1.5'}. NuDat. Retrieved 2016-06-23. nndc.bnl.gov. Provenance: wikidata.org.
[6] ↑ iron-55 — parity quantum number (P1123): {'amount': '-1'}. NuDat. Retrieved 2016-06-23. nndc.bnl.gov. Provenance: wikidata.org.
[7] ↑ iron-55 — neutron number (P1148): {'amount': '+29'}. wikidata.org.
[8] ↑ iron-55 — mass (P2067): 54.938291283 dalton. The AME2016 atomic mass evaluation (I). Evaluation of input data; and adjustment procedures. Retrieved 2017-03-01. amdc.in2p3.fr. Provenance: wikidata.org.
[9] ↑ iron-55 — half-life (P2114): 2.744 annum. NuDat. Retrieved 2015-10-29. nndc.bnl.gov. Provenance: wikidata.org.
[10] ↑ iron-55 — binding energy (P2154): 481062.725 kiloelectronvolt. The AME2016 atomic mass evaluation (I). Evaluation of input data; and adjustment procedures. Retrieved 2017-03-01. amdc.in2p3.fr. Provenance: wikidata.org.
[11] ↑ iron-55 — mass excess (P2160): -57481.3 kiloelectronvolt. The AME2016 atomic mass evaluation (I). Evaluation of input data; and adjustment procedures. Retrieved 2017-03-01. amdc.in2p3.fr. Provenance: wikidata.org.

Class ancestry

[1] ↑ iron-55 is an instance of isotope of iron (Q1201493) [P31, primary]. Wikidata. wikidata.org.

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BibTeX

@misc{4ortxyz_iron-55_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{iron-55}}, year = {2026}, url = {https://4ort.xyz/entity/iron-55}, note = {Accessed: 2026-11-02}}

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