Hexpentseptium (Hps)
Hexpentseptium is the systematic name of the theoretical 657. element in the periodic table with a symbol of Hps and atomic number of 657. Hexpentseptium, also known as element 657, has sześćset pięćdziesiąt siedem protons in its nucleus, and sześćset pięćdziesiąt siedem electrons in its shells.