Pentbinilium (Pbn)

Pentbinilium is the systematic name of the theoretical 520. element in the periodic table with a symbol of Pbn and atomic number of 520. Pentbinilium, also known as element 520, has հինգ­հարյուր քսան protons in its nucleus, and հինգ­հարյուր քսան electrons in its shells.