Septennennium (See)

Septennennium is the systematic name of the theoretical 799. element in the periodic table with a symbol of See and atomic number of 799. Septennennium, also known as element 799, has septyni šimtai devyniasdešimt devyni protons in its nucleus, and septyni šimtai devyniasdešimt devyni electrons in its shells.