Pentennilium (Pen)

Pentennilium is the systematic name of the theoretical 590. element in the periodic table with a symbol of Pen and atomic number of 590. Pentennilium, also known as element 590, has հինգ­հարյուր իննասուն protons in its nucleus, and հինգ­հարյուր իննասուն electrons in its shells.