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 пятьсот пятьдесят семь protons in its nucleus, and пятьсот пятьдесят семь electrons in its shells.