Octbiunium (Obu)

Octbiunium is the systematic name of the theoretical 821-ші element in the periodic table with a symbol of Obu and atomic number of 821. Octbiunium, also known as element 821, has сегіз жүз жиырма бір protons in its nucleus, and сегіз жүз жиырма бір electrons in its shells.