Unbibium

Unbibium is the temporary systematic name assigned to the hypothetical chemical element with atomic number 122. No confirmed discovery or accepted chemical properties are known.

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IUPAC systematic element name: A temporary name formed from an element’s atomic-number digits using standardized numerical roots and the suffix -ium. Unbibium combines the roots for 1, 2, and 2 under this naming system.
Island of stability: A predicted region of superheavy nuclei with longer half-lives than nearby isotopes. Its nuclear models shape expectations for whether unbibium isotopes might persist long enough to detect.
Unbinilium: The temporary systematic name for the hypothetical element with atomic number 120. It uses the same naming rules for a neighboring, also unconfirmed element.
Heavy-ion accelerator: A particle accelerator that propels atomic nuclei to high energies for nuclear-reaction experiments. Such accelerators provide the beams used in attempts to create superheavy nuclei.
Atomic number: The number of protons in an atom’s nucleus, which determines the identity of its element. The number 122 specifies the proton count that unbibium would have.
Nuclear shell model: A model describing nuclear structure through energy levels occupied by protons and neutrons. Predicted shell closures influence estimates of unbibium’s possible stability.
Unbiunium: The temporary systematic name for the hypothetical element with atomic number 121. It shows the systematic name assigned to the immediately preceding atomic number.
Separator for heavy elements: An instrument that separates rare reaction products from intense beams and unwanted nuclear products. Separators can isolate candidate atoms long enough for decay measurements.
Periodic table: A tabular arrangement of chemical elements ordered by atomic number and recurring chemical properties. Element 122 would occupy a position beyond the currently confirmed elements.
Fusion-evaporation: A nuclear reaction process in which colliding nuclei fuse and the excited product emits particles. It is a principal approach used to try to synthesize superheavy nuclei such as element 122.