Pentseptseptium (Pss)
Pentseptseptium is the systematic name of the theoretical 577. element in the periodic table with a symbol of Pss and atomic number of 577. Pentseptseptium, also known as element 577, has viissada seitsekümmend seitse protons in its nucleus, and viissada seitsekümmend seitse electrons in its shells.