tsirkooniumit
Tsirkooniumit is a hypothetical chemical element that appears in the literature on extended periodic table research. It is sometimes described as element 172, belonging to the transactinide series, and it would be expected to have an atomic number of 172 with a putative electron configuration that extends the 7f and 8d subshells. The name derives from the Greek word “tsirkos”, meaning “twisting”, referring to the element’s predicted highly irregular electronic shell structure. Because no isotope of tsirkooniumit has yet been synthesized, its existence remains theoretical.
According to relativistic density functional calculations, tsirkooniumit would have a very high melting point, potentially over
In theoretical studies, tsirkooniumit is occasionally explored as a candidate for stabilizing unusual cluster compounds in