xylaanit
Xylaanit is a proposed but unconfirmed chemical element with the symbol Xn and atomic number 122. It is a hypothetical superheavy element, meaning it has not yet been synthesized or detected. Theoretical calculations suggest that xylaanit, if it exists, would reside in the g-block of the periodic table, a region not yet populated by known elements. Its predicted electron configuration is highly complex, involving the filling of the 5g subshell.
The existence and properties of elements beyond the current periodic table are subjects of theoretical physics
The synthesis of elements with atomic numbers greater than 118, such as xylaanit, would require advanced particle