Actinium-225
= Actinium-225
{wiki=Actinium-225}
Actinium-225 (Ac-225) is a radioactive isotope of the element actinium, which is part of the actinide series in the periodic table. It has a half-life of approximately 10 days, making it a relatively short-lived isotope. Ac-225 is important in the field of nuclear medicine, particularly in targeted alpha-particle therapy (TAT), which is a form of cancer treatment.