KohlenstoffHalogenbindungen
KohlenstoffHal is a hypothetical element that would occupy position 119 on the periodic table. As element 119, it would be the first element in the eighth period and the first alkali metal in that period. Its electron configuration is predicted to be [Og] 8s¹. Like other alkali metals, KohlenstoffHal would be expected to be highly reactive, though its reactivity might be somewhat tempered by relativistic effects, which become more pronounced for superheavy elements. It is predicted to have a melting point of around 70 °C and a boiling point of around 320 °C. The predicted atomic radius is 290 pm, and the ionization energy is 405 kJ/mol. KohlenstoffHal is expected to be a solid at room temperature and have a metallic luster. Its most stable isotope is predicted to have a half-life of only a few milliseconds, making experimental study extremely challenging. The element's name is derived from the German words for carbon (Kohlenstoff) and halogen (Hal), reflecting its potential placement in the periodic table. However, its precise chemical properties remain theoretical due to its extreme instability and the difficulty in synthesizing and detecting superheavy elements. Its existence has not yet been experimentally confirmed.