Ununquadium
Ununquadium General
| Name:Ununquadium | Symbol:Uuq |
| Type:Other Metal (presumed) | Atomic weight:289 |
| Density @ 293 K:g/cm3 | Atomic volume:cm3/mol |
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Discovered:
Ununquadium was first made by research scientists at the Joint Institute for Nuclear Research in Dubna, Russia in 1998. Scientists bombarded a plutonium target with calcium ions. Ununquadium (Uuq) is a temporary element name until it is given an official name by The International Union of Pure and Applied Chemistry (IUPAC). As a result of its position in the periodic table ununquadium might have been expected to be classed as one of the "other metals", with properties similar to lead. Too little of the element has been synthesized for its properties to be certain. With a [Rn] 5f14 6d10 7s2 7p2 configuration chemists wondered how the filled 7p1/2 subshell might influence the chemical properties of ununquadium. Significant spin-orbit splitting between the spherical 7p1/2 and distorted 7p3/2 orbitals meant estimates ranged from a noble gas-like behavior to a lead-like behavior. Initial results indicate ununquadium may exhibit noble gas-like behaviour.(1) |
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Ununquadium States
| State (s, l, g):solid | |
| Melting point:K ( °C) | Boiling point:K ( °C) |
Ununquadium Energies
| Specific heat capacity:J g-1 K-1 | Heat of atomization:kJ mol-1 |
| Heat of fusion:kJ mol-1 | Heat of vaporization :kJ mol-1 |
| 1st ionization energy:kJ mol-1 | 2nd ionization energy:kJ mol-1 |
| 3rd ionization energy:kJ mol-1 | Electron affinity:kJ mol-1 |
Ununquadium Oxidation & Electrons
| Shells:2, 8, 18, 32, 32, 18, 4 | Electron configuration:[Rn] 5f14 6d10 7s2 7p2 |
| Minimum oxidation number: | Maximum oxidation number: |
| Min. common oxidation no.: | Max. common oxidation no.: |
| Electronegativity (Pauling Scale): | Polarizability volume:Å3 |
Ununquadium Appearance & Characteristics
| Structure: | Color: |
| Hardness:mohs | |
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Harmful effects:
Ununquadium is harmful due to its radioactivity. |
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Characteristics:
Ununquadium is a synthetic radioactive metal and has only been produced in minute amounts. Uses: Ununquadium is of research interest only. |
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Ununquadium Reactions
| Reaction with air: | Reaction with 6 M HCl: |
| Reaction with 15 M HNO3: | Reaction with 6 M NaOH: |
Ununquadium Compounds
| Oxide(s): | Chloride(s): |
| Hydride(s): |
Ununquadium Radius
| Atomic radius:pm | Ionic radius (1+ ion):pm |
| Ionic radius (2+ ion):pm | Ionic radius (3+ ion):pm |
| Ionic radius (2- ion):pm | Ionic radius (1- ion):pm |
Ununquadium Conductivity
| Thermal conductivity:W m-1 K-1 | Electrical conductivity:x 106 S cm-1 |
Ununquadium Abundance & Isotopes
| Abundance earth's crust: nil | |
| Abundance solar system:parts per billion by weight, part per billion by moles | |
| Cost, pure: $ per 100g | |
| Cost, bulk: $ per 100g | |
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Source:
Ununquadium is a synthetic radioactive metal, created via nuclear bombardment, and has only been produced in minute amounts. Ununquadium is produced by bombarding 244Pu with 48Ca in a heavy ion accelerator. |
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Isotopes:
Ununquadium has 4 isotopes whose half-lives are known, with mass numbers from 286 to 289. None are stable. The most stable isotope is 289Uuq, with a half-life of 1.1 minutes. |
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Ununquadium Other
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Other:
References |
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