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Element 117, discovered by Laboratory, one step closer to being named. Element 117, first discovered by Lawrence Livermor escientists and international collaborators in 2010, is one step closer to being named.
Characterization and identification. Two important factors provided the key to the discovery and identification of many of the earliest-known transuranium elements. One was the actinoid concept, which stated that the transuranium elements were part of a series of elements that paralleled the earlier lanthanoid series. It was postulated (and subsequently demonstrated) that this actinoid series started at thorium and that its chemistry would be similar to that of the lanthanoids.