Unbipentium (Ubp)
SuperactinideStandard Atomic Weight
N/AElectron configuration
[Og] 5g⁵ 8s²Melting point
N/ABoiling point
N/ADensity
N/AOxidation states
N/AElectronegativity (Pauling)
N/AIonization energy (1st)
Discovery year
N/AAtomic radius
N/AUnbipentium is the temporary systematic name for the unconfirmed element with atomic number 125. It belongs to the predicted superheavy region beyond oganesson and is usually treated as an 8th-period superactinide rather than as a member of any experimentally known chemical family. No isotope, atom, or compound has been confirmed. Its expected chemistry is model-dependent because relativistic effects and closely spaced valence orbitals should be important.
This element has not been synthesized or experimentally confirmed. All listed physicochemical properties are calculated, extrapolated, or model-dependent.
Images
Properties
Physical
N/A
Chemical
- Electron affinity
- Electron configuration
Thermodynamic
N/A
Nuclear
- Protons
- 125
- Known isotopes
- 0
- Stable isotopes
- 0
- Natural occurrence
- not_observed
Abundance
N/A
Safety
- Radioactive
- Yes
Crystal Structure
N/A
Electronic Structure
- Electrons per shell
- 2, 8, 18, 32, 37, 18, 8, 2
Identifiers
- CAS number
- 54576-76-0
Electron Configuration Predicted
——Electron configuration data not available for this ion.
Atomic model
Isotopes change neutron count, mass, and stability — not the electron configuration of a neutral atom.
N/A
Schematic atomic model, not to scale.
Atomic Fingerprint
Emission / Absorption Spectrum
Isotope Distribution
No stable isotopes.
| Mass number | Atomic mass (u) | Natural abundance | Half-life |
|---|
Phase / State
Phase/state data not available
N/A
Phase/state data not available