Monómerunum
Monómerunum is a hypothetical element with atomic number 115, often referred to by its systematic placeholder name ununpentium. It belongs to the p-block of the periodic table and is predicted to be a member of the nitrogen group, although its chemical properties are not expected to strongly resemble those of lighter elements in this group due to relativistic effects. Monómerunum is classified as a superheavy element, meaning it has a high atomic number and is synthesized in laboratories rather than found naturally.
The element is extremely unstable and has only been produced in minute quantities through nuclear fusion reactions.
The discovery of Monómerunum was first announced by a joint Russian-American team in 2003. The experiment involved