A transuranic element, an actinide,
to synthesize, you require high speed.
In a particle accelerator,
to overcome the repulsion of the core.

Around twelve isotopes exist,
quite a long list,
yet unstable, too much energy,
radioactive as you can see,

It is produced and characterized,
of course not fully analyzed,
Metallic properties in theory,
it will probably stay hypothetically,

not enough material is produced to determine,
and with its short living, not enough time,
therefore there is no application,
a human high speed creation,

The name shall honor Alfred Nobel,
no other relation, that I could tell.
As nobody can hold too much power,
the longest half-time, an hour.