Penthexennium (Phe)

Penthexennium is the systematic name of the theoretical 569. element in the periodic table with a symbol of Phe and atomic number of 569. Penthexennium, also known as element 569, has пятьсот шестьдесят девять protons in its nucleus, and пятьсот шестьдесят девять electrons in its shells.