Hexbiennium (Hbe)

Hexbiennium is the systematic name of the theoretical 629e element in the periodic table with a symbol of Hbe and atomic number of 629. Hexbiennium, also known as element 629, has zes­honderd­negen­en­twintig protons in its nucleus, and zes­honderd­negen­en­twintig electrons in its shells.