Hexennseptium (Hes)
Hexennseptium is the systematic name of the theoretical 697a element in the periodic table with a symbol of Hes and atomic number of 697. Hexennseptium, also known as element 697, has şase sute nouăzeci şi şapte protons in its nucleus, and şase sute nouăzeci şi şapte electrons in its shells.