Unconfirmed Discoveries
| Z | Name | Discovery year |
Discoverer | Notes |
|---|---|---|---|---|
| 118 | Ununoctium | 2002 | Joint Institute for Nuclear Research in Dubna and Lawrence Livermore National Laboratory | Prepared by bombardment of californium with calcium |
| 113 | Ununtrium | 2003 | Joint Institute for Nuclear Research in Dubna and Lawrence Livermore National Laboratory | Alpha decay of ununpentium |
| 115 | Ununpentium | 2003 | Joint Institute for Nuclear Research in Dubna and Lawrence Livermore National Laboratory | Prepared by bombardment of americium with calcium |
| 117 | Ununseptium | 2010 | Joint Institute for Nuclear Research in Dubna and Lawrence Livermore National Laboratory | Prepared by bombardment of berkelium with calcium |
Read more about this topic: Timeline Of Chemical Elements Discoveries
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