Penthexunium (Phu)

Penthexunium is the systematic name of the theoretical 561'инчи element in the periodic table with a symbol of Phu and atomic number of 561. Penthexunium, also known as element 561, has беш жүз алтымыш бир protons in its nucleus, and беш жүз алтымыш бир electrons in its shells.