Octbiunium (Obu)

Octbiunium is the systematic name of the theoretical 821'инчи element in the periodic table with a symbol of Obu and atomic number of 821. Octbiunium, also known as element 821, has сегиз жүз жыйырма бир protons in its nucleus, and сегиз жүз жыйырма бир electrons in its shells.