Hexennunium (Heu)

Hexennunium is the systematic name of the theoretical ٦٩١. element in the periodic table with a symbol of Heu and atomic number of 691. Hexennunium, also known as element 691, has ستة مائة وواحد وتسعون protons in its nucleus, and ستة مائة وواحد وتسعون electrons in its shells.