Actinium

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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Tree Number(s): D01.268.271.100.033, D01.268.556.025, D01.496.749.305.100.033, D01.552.020.042, D01.552.544.025

MeSH Unique ID: D000186

Registry Number: NIK1K0956U

All MeSH Categories
Chemicals and Drugs Category
Inorganic Chemicals
Elements
Elements, Radioactive
Actinoid Series Elements
Actinium

All MeSH Categories
Chemicals and Drugs Category
Inorganic Chemicals
Elements
Metals, Heavy
Actinium

All MeSH Categories
Chemicals and Drugs Category
Inorganic Chemicals
Isotopes
Radioisotopes
Elements, Radioactive
Actinoid Series Elements
Actinium

All MeSH Categories
Chemicals and Drugs Category
Inorganic Chemicals
Metals
Actinoid Series Elements
Actinium

All MeSH Categories
Chemicals and Drugs Category
Inorganic Chemicals
Metals
Metals, Heavy
Actinium