Belaruksiin

Belaruksiin is a proposed, hypothetical element with the symbol Brx and atomic number 133. It is positioned within the superactinide series, which represents theoretical elements beyond the currently known actinide series in the periodic table. As a superactinide, belaruksiin would be expected to possess properties influenced by the filling of the 5g electron subshell, a region not occupied by electrons in any elements found naturally or synthesized thus far.

The existence of belaruksiin has not been experimentally confirmed, and its properties are largely theoretical, extrapolated from models of atomic structure and nuclear stability. Elements in this region of the periodic table are predicted to be highly unstable and radioactive, with extremely short half-lives. Theoretical studies suggest that the superactinide series may represent a region where nuclear shell effects could potentially lead to the existence of isotopes with increased stability, a concept sometimes referred to as an "island of stability." However, reaching and synthesizing such superheavy elements, including belaruksiin, presents significant technological challenges due to the extreme conditions required for nuclear fusion. Research into superheavy elements continues to push the boundaries of nuclear physics and chemistry, aiming to explore the limits of atomic matter.