Pentpenttrium (Ppt)
Pentpenttrium is the systematic name of the theoretical 553. element in the periodic table with a symbol of Ppt and atomic number of 553. Pentpenttrium, also known as element 553, has пʼятсот пʼятдесят три protons in its nucleus, and пʼятсот пʼятдесят три electrons in its shells.