Pentunpentium (Pup)
Pentunpentium is the systematic name of the theoretical 515वाँ element in the periodic table with a symbol of Pup and atomic number of 515. Pentunpentium, also known as element 515, has पाँच सौ पन्द्रह protons in its nucleus, and पाँच सौ पन्द्रह electrons in its shells.