Pentennunium (Peu)

Pentennunium is the systematic name of the theoretical 591. element in the periodic table with a symbol of Peu and atomic number of 591. Pentennunium, also known as element 591, has fënnef­honnert­eenannonzeg protons in its nucleus, and fënnef­honnert­eenannonzeg electrons in its shells.