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 pięćset sześćdziesiąt protons in its nucleus, and pięćset sześćdziesiąt electrons in its shells.