Hexennennium (Hee)

Hexennennium is the systematic name of the theoretical 699. element in the periodic table with a symbol of Hee and atomic number of 699. Hexennennium, also known as element 699, has šeši šimtai devyniasdešimt devyni protons in its nucleus, and šeši šimtai devyniasdešimt devyni electrons in its shells.