Pronunciation: /ækˈtɪniəm ˈsɪəriz/
noun A series of radioactive elements that starts with actinium and ends with lead-206, including actinium, thorium, protactinium, uranium, and various isotopes of these elements.
A1 The actinium series is a group of radioactive elements.
A2 Students in chemistry class learned about the actinium series.
B1 Scientists study the actinium series to understand radioactive decay.
B2 The actinium series is important in nuclear medicine for cancer treatment.
C1 Researchers are exploring the potential uses of actinium series isotopes in targeted alpha therapy.
C2 The actinium series provides valuable insights into the behavior of heavy radioactive elements.
formal The actinium series is a radioactive decay chain that starts with the element actinium-227.
informal Did you know about the actinium series and how it decays over time?
slang Yo, the actinium series is like a chain reaction of radioactive elements.
figurative The actinium series can be compared to a domino effect, with each element decaying into the next.
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