Pentpentseptium (Pps)
Pentpentseptium is the systematic name of the theoretical ٥٥٧. element in the periodic table with a symbol of Pps and atomic number of 557. Pentpentseptium, also known as element 557, has خمسة مائة وسبعة وخمسون protons in its nucleus, and خمسة مائة وسبعة وخمسون electrons in its shells.