julia> elements[:Uue].discovered_by
"GSI Helmholtz Centre for Heavy Ion Research"
While the GSI did attempt to synthesize Ununennium they did not succeed according to wikipedia. They also do not claim to have synthesized it. As it seems, no experiment has managed to discover it and it is only a hypothetical element.
Ununennium is the only hypothetical element in PeriodicTable.jl and that is kind of inconsistent. Possible solutions I would see would be:
Remove it due to being undiscovered
Add other hypothetical elements and mark them as such
While the GSI did attempt to synthesize Ununennium they did not succeed according to wikipedia. They also do not claim to have synthesized it. As it seems, no experiment has managed to discover it and it is only a hypothetical element.
Ununennium is the only hypothetical element in PeriodicTable.jl and that is kind of inconsistent. Possible solutions I would see would be:
discovered_bytoUndiscovered