helíumatóm

Helíumatóm is a hypothetical chemical element with the symbol Hu and atomic number 119. As of its conception, it has not been synthesized or detected. Helíumatóm is predicted to be the first element of the eighth period of the periodic table. Based on periodic trends, it is expected to be an alkali metal, belonging to Group 1. This would place it below francium in the periodic table. Its chemical properties are anticipated to be similar to the lighter alkali metals, such as sodium or potassium, though relativistic effects might cause deviations.

Theoretical calculations suggest that helíumatóm would be highly reactive, likely more so than francium. Its isotopes are predicted to be extremely unstable, with very short half-lives, making its detection and study exceptionally challenging. The synthesis of helíumatóm would require bombarding heavy target nuclei with lighter projectile nuclei in particle accelerators. The creation of such superheavy elements pushes the boundaries of nuclear physics and chemistry, aiming to explore the limits of the periodic table and understand nuclear stability. The name "helíumatóm" is a placeholder, and an official name would be assigned by the International Union of Pure and Applied Chemistry (IUPAC) upon its confirmed discovery.