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 penki šimtai šešiasdešimt devyni protons in its nucleus, and penki šimtai šešiasdešimt devyni electrons in its shells.