Roentgenium
Roentgenium General
| Name:Roentgenium | Symbol:Rg |
| Type:Transition Metal | Atomic weight:281 |
| Density @ 293 K:g/cm3 | Atomic volume:cm3/mol |
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Discovered:
Roentgenium was first made by research scientists at the Heavy Ion Research Laboratory in Darmstadt, Germany in 1994. The scientists bombarded nickel with bismuth in a heavy ion accelerator. The element is named after physicist Wilhelm Conrad Röntgen who discovered X-rays in 1895. |
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Roentgenium States
| State (s, l, g): solid | |
| Melting point: K (°C) | Boiling point: K (°C) |
Roentgenium 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 |
Roentgenium Oxidation & Electrons
| Shells:2,8,18,32,32,17,2 | Electron configuration:[Rn] 5f14 6d9 7s2 |
| Minimum oxidation number: | Maximum oxidation number: |
| Min. common oxidation no.: | Max. common oxidation no.: |
| Electronegativity (Pauling Scale): | Polarizability volume:Å3 |
Roentgenium Appearance & Characteristics
| Structure: | Color: |
| Hardness:mohs | |
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Harmful effects:
Roentgenium is harmful due to its radioactivity. |
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Characteristics:
Roentgenium is a synthetic radioactive metal and has only been produced in minute amounts. Uses: Roentgenium is of research interest only. |
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Roentgenium Reactions
| Reaction with air: | Reaction with 6 M HCl: |
| Reaction with 15 M HNO3: | Reaction with 6 M NaOH: |
Roentgenium Compounds
| Oxide(s): | Chloride(s): |
| Hydride(s): |
Roentgenium 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 |
Roentgenium Conductivity
| Thermal conductivity:W m-1 K-1 | Electrical conductivity:x 106 S cm-1 |
Roentgenium 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:
Roentgenium is a synthetic radioactive metal, created via nuclear bombardment, and has only been produced in minute amounts. Roentgenium is produced by bombarding 209Bi with 64Ni in a heavy ion accelerator. |
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Isotopes:
Roentgenium has one isotope whose half-live is known, 269Rg, with a half-life of 1.5 milliseconds. |
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Roentgenium Other
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Other:
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