Septseptseptium (Sss)

Septseptseptium is the systematic name of the theoretical 777:e element in the periodic table with a symbol of Sss and atomic number of 777. Septseptseptium, also known as element 777, has sju­hundra­sjuttio­sju protons in its nucleus, and sju­hundra­sjuttio­sju electrons in its shells.