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 ութ­հարյուր իննասուն­մեկ protons in its nucleus, and ութ­հարյուր իննասուն­մեկ electrons in its shells.