bërthomore

Bërthomore is a fictional chemical element used in speculative science and science fiction to explore the behavior of superheavy metals. In most portrayals, it is imagined as one of the heaviest elements, characterized by extreme density and a very high melting point, with relativistic effects shaping its electronic structure. The symbol Bm is commonly applied, and the element is placed in the upper reaches of the imagined periodic table.

Chemical behavior is described as highly unusual: multiple oxidation states are possible in some models, while others treat bërthomore as a nearly inert lattice metal. The compound chemistry is speculative, with proposed oxides or intermetallics that challenge standard bonding concepts.

Origin and naming vary by source. Some writers attribute the name to a fictional place or discoverer, while others treat it as a descriptive coinage to evoke heaviness. No experimental synthesis or observation exists outside of fiction or hypothetical computation.

Uses in fiction range from a compact, high-energy material for propulsion to a candidate for ultra-durable alloys in extreme environments. In real-world discourse, bërthomore is cited as a didactic tool or benchmark for relativistic chemistry and computational methods when modeling hypothetical superheavy species.

See also: Superheavy element, Fictional element, Relativistic quantum chemistry.