Ununpentium
Main article: Isotopes of ununpentium
| nuclide symbol |
Z(p) | N(n) | isotopic mass (u) |
half-life | nuclear spin |
representative isotopic composition (mole fraction) |
range of natural variation (mole fraction) |
|---|---|---|---|---|---|---|---|
| excitation energy | |||||||
| 287Uup | 115 | 172 | 287.19119(85)# | 32(+155-14) ms | |||
| 288Uup | 115 | 173 | 288.19249(92)# | 87(+105-30) ms | |||
| 289Uup | 115 | 174 | 289.19272(110)# | 10# s | |||
| 290Uup | 115 | 175 | 290.19414(106)# | 10# s | |||
| 291Uup | 115 | 176 | 291.19438(95)# | 1# min | |||
Read more about this topic: Isotope Lists, 97+