Annetelement

Annetelement is a fictional chemical element introduced in speculative science fiction and in some theoretical exercises exploring the limits of the periodic table. In most depictions, annetelement is a superheavy element with an imagined atomic number greater than the heaviest confirmed elements, and it is assigned the symbol An.

Properties vary by author, but common features include extremely high density, metallic bonding, and relativistic effects in its electron structure; some stories describe room-temperature conductivity or superconductivity, while others emphasize extreme radioactivity and short-lived isotopes.

Discovery and production in fiction usually involve fusion of heavy ions in advanced accelerators, with production yields described as vanishingly small and requiring elaborate containment and shielding.

Occurrence is purely synthetic; no annetelement has been observed in nature.

Applications in fiction range from compact energy storage and quantum devices to novel materials, though safety, ethical, and environmental concerns are commonly noted.

Etymology: The name annetelement is typically attributed to fictional researchers named Anne, serving as a world-building placeholder.

In real-world science, annetelement does not exist.