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| Ununbium | Ununbium | Ununbij | Ununbio | Ununbium | ||||||||||||||||||||
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Uub Ununbium |
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- Ununbium was discovered by S. Hofmann et al. collaboration at the Heavy Ion Research Laboratory (Gesellschaft für Schwerionenforschung, GSI) in Darmstadt, Germany in February 1996. The new element has not yet been officially named, but it is known as ununbium, according to the system designated by the IUPAC for naming new elements. It is synthetic radioactive metal.
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TRANSITION ELEMENT: ZINC GROUP | |
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| Relative atomic mass: | [285] | Electronic configuration: | [Rn] 5f14 6d10 7s2 |
| Formal oxidation number: | Electronegativities: | - | |
| Thermal conductivity: | - W m-1 K-1 | Electrical resistivity (20 °C): | - μΩcm |
| Atomic radius: | - pm | Standard state (20 °C): | solid |
| Density (g dm-3): | - | Molar volume (cm3 mol-1): | - |
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THERMAL PROPERTIES | |
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| Melting point: | - °C | Heat of fusion: | - kJ mol-1 |
| Boiling point: | - °C | Heat of vaporization: | - kJ mol-1 |
| Critical temperature: | - °C | Heat of atomization: | - kJ mol-1 |
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IONIZATION ENERGIES AND ABUNDANCE | |
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| 1st ionization energy: | - kJ mol-1 | Abundance of element (air): | - ppm |
| 2nd ionization energy: | - kJ mol-1 | Abundance of element (Earth's crust): | - ppm |
| 3rd ionization energy: | - kJ mol-1 | Abundance of element (oceans): | - ppm |
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ISOTOPES | |
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Isotopes | Relative atomic mass | Abundance (%) |
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MINERALS AND USES | |
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- Using the electromagnetic velocity filter SHIP, fusion-like residues of the reaction of 70Zn with enriched 208Pb targets were measured. Two chains of localized alpha-emitters were identified as originating with 277112 + 1n. uub Uub
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REDUCTION POTENTIALS | |
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Balanced half-reaction | Eo / V | Annotation |
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