Octbiunium (Obu)

Octbiunium is the systematic name of the theoretical 821. element in the periodic table with a symbol of Obu and atomic number of 821. Octbiunium, also known as element 821, has οκτακόσια είκοσι ένα protons in its nucleus, and οκτακόσια είκοσι ένα electrons in its shells.