Editing Extended periodic table (section)

==== Unbiunium (E121) <span class="anchor" id="Unbiunium"></span> ====
The synthesis of [[unbiunium|element 121]] (unbiunium) was first attempted in 1977 by bombarding a target of [[uranium-238]] with [[copper]]-65 ions at the [[Gesellschaft für Schwerionenforschung]] in [[Darmstadt]], Germany:
:{{nuclide|uranium|238}} + {{nuclide|copper|65}} → <sup>303</sup>121* → no atoms
No atoms were identified.<ref name=beyonduranium>{{cite book |last=Hofmann |first=Sigurd |date=2002 |title=On Beyond Uranium |publisher=Taylor & Francis |page=[https://archive.org/details/onbeyonduraniumj0000hofm/page/105 105] |isbn=978-0-415-28496-7 |url=https://archive.org/details/onbeyonduraniumj0000hofm/page/105 }}</ref>