" /> actinium - CISMeF





Preferred Label : actinium;

MeSH definition : A trivalent radioactive element and the prototypical member of the actinide family. It has the atomic symbol Ac, and atomic number 89. Its principal isotope is 227 and it decays primarily by beta-emission.;

MeSH CAS label : actinium;

MeSH Related Number : 7440-34-8 (Actinium);

Registry Number MeSH : 7440-34-8;

MeSH annotation : naturally radioactive; IM;

Wikipedia link : https://en.wikipedia.org/wiki/Actinium;

Is substance : O;

UNII : NIK1K0956U;

InChIKey : QQINRWTZWGJFDB-UHFFFAOYSA-N;

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

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27/07/2025


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