Octennunium (Oeu)

Octennunium is the systematic name of the theoretical 891-ші element in the periodic table with a symbol of Oeu and atomic number of 891. Octennunium, also known as element 891, has сегіз жүз тоқсан бір protons in its nucleus, and сегіз жүз тоқсан бір electrons in its shells.