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 viisi­sataa­viisi­kymmentä­seitsemän protons in its nucleus, and viisi­sataa­viisi­kymmentä­seitsemän electrons in its shells.