Hexhexhexium (Hhh)
Hexhexhexium is the systematic name of the theoretical 666. element in the periodic table with a symbol of Hhh and atomic number of 666. Hexhexhexium, also known as element 666, has шестсто шеесет и шест protons in its nucleus, and шестсто шеесет и шест electrons in its shells.