The nucleosynthesis of superheavy atoms such as transactinides is an exciting area of nuclear physics, but not much of a playground for chemistry because
My question is: what is the heaviest atom ever used in chemistry? For this I define chemistry as “making a compound with the atom (molecule or material) and characterizing it to some extent”.
The one source I found on the topic is “Critical evaluation of the chemical properties of the transactinide elements (IUPAC Technical Report)”, dated 2003, but it seems quite old for such a rapidly developing field. Also, despite being title “chemical properties” it mostly reports on physical properties.