Septbiennium (Sbe)

Septbiennium is the systematic name of the theoretical 729. element in the periodic table with a symbol of Sbe and atomic number of 729. Septbiennium, also known as element 729, has sebaʼ mija u disgħa u għoxrin protons in its nucleus, and sebaʼ mija u disgħa u għoxrin electrons in its shells.