Penthexhexium (Phh)

Penthexhexium is the systematic name of the theoretical 566. element in the periodic table with a symbol of Phh and atomic number of 566. Penthexhexium, also known as element 566, has fimm­hundrað­og­seksti­seks protons in its nucleus, and fimm­hundrað­og­seksti­seks electrons in its shells.