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Roentgenium Element Facts

Data Zone | Discovery | Facts | Appearance & Characteristics | Uses | Abundance & Isotopes | References
111
Rg
(281)

The chemical element roentgenium is classed as a transition metal. It was discovered in 1994 by research scientists at the Heavy Ion Research Laboratory in Darmstadt, Germany.

Data Zone

Classification: Roentgenium is a transition metal
Color:
Atomic weight: (281), no stable isotopes
State: solid (presumed)
Melting point:
Boiling point:
Electrons: 111
Protons: 111
Neutrons in most abundant isotope: 170
Electron shells: 2,8,18,32,32,17,2
Electron configuration: [Rn] 5f14 6d9 7s2
Density @ 20oC:
Show more, including: Heats, Energies, Oxidation,
Reactions, Compounds, Radii, Conductivities
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Wilhelm Conrad Roentgen

Roentgenium is named after Wilhelm Roentgen, who was awarded the first ever Physics Nobel Prize in 1901 for his discovery of x-rays.

Discovery of Roentgenium

Roentgenium was first made by research scientists at the Heavy Ion Research Laboratory in Darmstadt, Germany in 1994.

The scientists bombarded nickel-64 with bismuth-209 in a heavy ion accelerator.

The element is named after physicist Wilhelm Conrad Röntgen who discovered X-rays in 1895.

Appearance and Characteristics

Harmful effects:

Roentgenium is harmful due to its radioactivity.

Characteristics:

Roentgenium is a synthetic radioactive metal and has only been produced in minute amounts.

Uses of Actinium

Roentgenium is of research interest only.

Abundance and Isotopes

Abundance earth’s crust: nil

Abundance solar system: parts per billion by weight, parts per trillion by moles

Cost, pure: $ per 100g

Cost, bulk: $ per 100g

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.

Isotopes: Roentgenium has 7 isotopes whose half-lives are known, with mass numbers from 272 to 282. None are stable. The most stable isotope is 281Rg, with a half-life of 23 seconds.

 

References

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The Elements

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