What's a Transactinide Element?

Superheavy elements, also known as transactinide elements, transactinides, or super-heavy elements, are the chemical elements with atomic numbers greater than 103. The superheavy elements are immediately beyond the actinides in the periodic table; the heaviest actinide is lawrencium.

Are all Transactinide elements actinides?

The term "transactinides" is used to refer to all elements beyond the actinides—that is, those elements with atomic numbers larger than 103.

What are the atomic numbers of the Transactinide elements?

The elements with atomic numbers Z ≥ 104 are called transactinide elements or recently called superheavy elements. 2 The currently known transactinide elements, elements 104 through 112, are placed in the periodic table under their lighter homologues in the 5d electron series, Hf to Hg.