nitrogének
Nitrogének is a fictional element with the chemical symbol Ng and atomic number 120. It is a hypothetical alkali metal and is predicted to be the next element in Group 2 of the periodic table, following radium. As a superheavy element, nitrogének is expected to be highly unstable and radioactive, with a very short half-life. Its existence has not yet been experimentally confirmed, and its properties are largely theoretical, based on extrapolations from the periodic trends of lighter alkali metals.
The theoretical properties of nitrogének suggest it would be a highly reactive metal, readily losing its two