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Ununpentium


115

Uup

Ununpentium
288.00000
2
8
18
32
8
2
2
27

Source

Ununpentium is a chemical element with symbol Uup and atomic number 115. It is a synthetic element with the symbol Uup and the atomic number 115. It is an extremely radioactive synthetic element. Ununpentium is the most stable known isotope of uup-238, with a half-life of approximately 10 seconds.