Hexhexseptium (Hhs)

Hexhexseptium is the systematic name of the theoretical 667:e element in the periodic table with a symbol of Hhs and atomic number of 667. Hexhexseptium, also known as element 667, has sex­hundra­sextio­sju protons in its nucleus, and sex­hundra­sextio­sju electrons in its shells.