Septtrioctium (Sto)

Septtrioctium is the systematic name of the theoretical 738:e element in the periodic table with a symbol of Sto and atomic number of 738. Septtrioctium, also known as element 738, has sju­hundra­trettio­åtta protons in its nucleus, and sju­hundra­trettio­åtta electrons in its shells.