Timeline of chemical element discoveries Modern discoveries Modern discoveries

| Z | Element_ | Observed_or_predicted | Isolated_widely_known | Observer | First_isolator | Notes_ |
|---|---|---|---|---|---|---|
| 114 | Flerovium | 1999 |  | Y. Oganessian et al. (JINR in Dubna) |  | Prepared by bombardment of plutonium with calcium |
| 116 | Livermorium | 2000 |  | Y.Oganessian et al. (JINR in Dubna) |  | Prepared by bombardment of curium with calcium |