Penthexennium (Phe)

Penthexennium is the systematic name of the theoretical 569ste element in the periodic table with a symbol of Phe and atomic number of 569. Penthexennium, also known as element 569, has vyfhonderd nege-en-sestig protons in its nucleus, and vyfhonderd nege-en-sestig electrons in its shells.