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 fünf­hundert­sechs­und­sechzig protons in its nucleus, and fünf­hundert­sechs­und­sechzig electrons in its shells.