Related MeSH Hierarchy (5)
Chemicals and Drugs [D] » Inorganic Chemicals [D01] » Elements » Elements, Radioactive » Actinoid Series Elements » Actinium
Chemicals and Drugs [D] » Inorganic Chemicals [D01] » Elements » Metals, Heavy » Actinium
Chemicals and Drugs [D] » Inorganic Chemicals [D01] » Isotopes » Radioisotopes » Elements, Radioactive » Actinoid Series Elements » Actinium
Chemicals and Drugs [D] » Inorganic Chemicals [D01] » Metals » Actinoid Series Elements » Actinium
Chemicals and Drugs [D] » Inorganic Chemicals [D01] » Metals » Metals, Heavy » Actinium
Description
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
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