What is another word for actinium?
Pronunciation: [aktˈɪni͡əm] (IPA) 
Actinium is a rare and radioactive element that has limited practical applications. It has a number of synonyms that can be used to refer to it, including "Ac," its chemical symbol, and "radiothorium." Actinium is also commonly referred to as "actinium-227," which is its most stable isotope. Other synonyms for actinium include "actinide," which is a group of elements that includes actinium, and "actinon," which was a proposed name for the element before it was discovered. While actinium may not be a well-known term, its synonyms and related elements are a common topic of study in the fields of chemistry and nuclear physics.
