Pentennennium (Pee)

Pentennennium is the systematic name of the theoretical 599. element in the periodic table with a symbol of Pee and atomic number of 599. Pentennennium, also known as element 599, has penki šimtai devyniasdešimt devyni protons in its nucleus, and penki šimtai devyniasdešimt devyni electrons in its shells.