Penthexnilium (Phn)

Penthexnilium is the systematic name of the theoretical 560. element in the periodic table with a symbol of Phn and atomic number of 560. Penthexnilium, also known as element 560, has fënnef­honnert­siechzeg protons in its nucleus, and fënnef­honnert­siechzeg electrons in its shells.