Septseptunium (Ssu)
Septseptunium is the systematic name of the theoretical 771. element in the periodic table with a symbol of Ssu and atomic number of 771. Septseptunium, also known as element 771, has յոթհարյուր յոթանասունմեկ protons in its nucleus, and յոթհարյուր յոթանասունմեկ electrons in its shells.