- Name: unbiunium
- Symbol: Ubu
- Atomic number: 121
- Relative atomic mass (Ar): [ ?]
- Standard state: presumably a solid at 298 K
- Appearance: unknown, but probably metallic and silvery white or grey in appearance
- Classification: Metallic
- Group in periodic table:
- Group name: (none)
- Period in periodic table: 8 [unbiunoid]
- Block in periodic table: g
- Shell structure: 2.8.18.32.33.18.8.2
- CAS Registry:
Unbiunium atoms have 121 electrons and the shell structure is 2.8.18.32.33.18.8.2. The ground state electronic configuration of neutral unbiunium is [Og].8s2.5g1 (a guess) and the term symbol of unbiunium is (no data).
Unbiunium: description
Element 121 (unbiunium, Ubu) at the time of writing has not been discovered.
Unbiunium: physical properties
Density of solid: (no data) kg m-3
Molar volume: (no data) cm3
Thermal conductivity: (no data) W m‑1 K‑1
Unbiunium: heat properties
Melting point: (no data) K
Boiling point: (no data) K
Enthalpy of fusion: 20.5 kJ mol-1
Unbiunium: atom sizes
Atomic radius (empirical): (no data) pm
Molecular single bond covalent radius: (no data) ppm
van der Waals radius: (no data) ppm
Unbiunium: electronegativities
Pauling electronegativity: (no data) (Pauling units)
Allred Rochow electronegativity: (no data) (Pauling units)
Mulliken-Jaffe electronegativity: (no data)
Unbiunium: orbital properties
First ionisation energy: 429 kJ mol‑1
Second ionisation energy: (no data) kJ mol‑1
Third ionisation energy: (no data) kJ mol‑1
Unbiunium: abundances
Universe: (no data) ppb by weight
Crustal rocks: (no data) ppb by weight
Human: (no data) ppb by weight
Unbiunium: crystal structure
Unbiunium: biological data
- Human abundance by weight: (no data) ppb by weight
Since element 121 is unknown, it has no biological role.
Unbiunium: uses
Unbiunium: reactions
Reactions of unbiunium as the element with air, water, halogens, acids, and bases where known.
Unbiunium: binary compounds
Binary compounds with halogens (known as halides), oxygen (known as oxides), hydrogen (known as hydrides), and other compounds of unbiunium where known.
Unbiunium: compound properties
Bond strengths; lattice energies of unbiunium halides, hydrides, oxides (where known); and reduction potentials where known.
Unbiunium: history
Unbiunium was discovered by (no claim for discovery made) in (no claim for discovery made) at (no claim for discovery made). Origin of name: temporary systematic IUPAC nomenclature.Unbiunium: isotopes
Unbiunium: isolation
Isolation: as this element is unknown it has never never been isolated.