Septoctseptium (Sos)

Septoctseptium is the systematic name of the theoretical 787:e element in the periodic table with a symbol of Sos and atomic number of 787. Septoctseptium, also known as element 787, has sju­hundra­åttio­sju protons in its nucleus, and sju­hundra­åttio­sju electrons in its shells.