Septbiennium (Sbe)

Septbiennium is the systematic name of the theoretical 729-шы element in the periodic table with a symbol of Sbe and atomic number of 729. Septbiennium, also known as element 729, has жеті жүз жиырма тоғыз protons in its nucleus, and жеті жүз жиырма тоғыз electrons in its shells.