Transuranium Element

Like any series of elements, the transuranium elements have similarities and differences in their chemical properties. Also like any other series of elements, they must fit into the periodic table in positions that match their atomic numbers and electronic structures. The transuranium elements are often treated as a "family," not because their properties are closely related (although some of them are), but only because they represent the latest, post-1940 extension of the periodic table. Uniting them is their history of discovery and their radioactivity, more than their chemical properties.