Octennunium (Oeu)

Octennunium is the systematic name of the theoretical 891. element in the periodic table with a symbol of Oeu and atomic number of 891. Octennunium, also known as element 891, has aštuoni šimtai devyniasdešimt vienas protons in its nucleus, and aštuoni šimtai devyniasdešimt vienas electrons in its shells.