Pentpentseptium (Pps)

Pentpentseptium is the systematic name of the theoretical 557. element in the periodic table with a symbol of Pps and atomic number of 557. Pentpentseptium, also known as element 557, has fem­hundrede og syv­og­halvtreds protons in its nucleus, and fem­hundrede og syv­og­halvtreds electrons in its shells.