Radiology Lexicon

Last uploaded: November 19, 2024
Preferred Name

actinium
Synonyms

Ac

Definitions

Actinium. A trivalent radioactive element and the prototypical member of the actinide family. It has the atomic symbol Ac, atomic number 89, and atomic weight 227.0278. Its principal isotope is 227 and decays primarily by beta-emission. [MeSH]

ID

http://www.radlex.org/RID/RID11938

Comment

Period7, Group=, Z=89

Definition

Actinium. A trivalent radioactive element and the prototypical member of the actinide family. It has the atomic symbol Ac, atomic number 89, and atomic weight 227.0278. Its principal isotope is 227 and decays primarily by beta-emission. [MeSH]

label

RID11938

Preferred_name

actinium

prefixIRI

RID1:RID11938

prefLabel

actinium

Synonym

Ac

UMLS_ID

C0001246

subClassOf

http://www.radlex.org/RID/RID11756

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