Penthexquadium (Phq)
Penthexquadium is the systematic name of the theoretical 564. element in the periodic table with a symbol of Phq and atomic number of 564. Penthexquadium, also known as element 564, has viisisataakuusikymmentäneljä protons in its nucleus, and viisisataakuusikymmentäneljä electrons in its shells.