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Periodic Table of Elements

Element Roentgenium - Rg

Comprehensive data on the chemical element Roentgenium is provided on this page; including scores of properties, element names in many languages, most known nuclides of Roentgenium. Common chemical compounds are also provided for many elements. In addition technical terms are linked to their definitions and the menu contains links to related articles that are a great aid in one's studies.

Roentgenium Menu

• Roentgenium Page One
  • Overview of Roentgenium
  • Roentgenium's Name in Other Languages
  • Atomic Structure of Roentgenium
  • Chemical Properties of Roentgenium
  • Physical Properties of Roentgenium
  • Regulatory / Health
  • Who/When/Where/How

Overview of Roentgenium

Roentgenium's Name in Other Languages

• Latin: Unununium

Atomic Structure of Roentgenium

• Number of Electrons (with no charge): 111
• Number of Neutrons (most common/stable nuclide): 161
• Number of Protons: 111

Chemical Properties of Roentgenium

• No Chemical properties information is currently available.

Physical Properties of Roentgenium

• Atomic Mass Average: 272
• Boiling Point:
• Coefficient of lineal thermal expansion/K^-1: N/A
• Conductivity

  Electrical:
  Thermal:

• Description:

  Synthetic produced radioactive super heavy element with an extremely short half life that does not occur in nature.

Regulatory / Health

• Levels In Humans:
  Note: this data represents naturally occuring levels of elements in the typical human, it DOES NOT represent recommended daily allowances.
  • Blood/mg dm^-3: nil
  • Bone/p.p.m: nil
  • Liver/p.p.m: nil
  • Muscle/p.p.m: nil
  • Daily Dietary Intake: nil
  • Total Mass In Avg. 70kg human: nil

Who / Where / When / How

• Discoverer: S.Hofmann, V.Ninov, F.P.Heßberger, P.Armbruster, H.Folger, G.Münzenberg, H.J.Schött
• Discovery Location: Darmstadt Germany
• Discovery Year: 1994
• Name Origin:

  Named for Wilhelm Conrad Roentgen who discovered X-rays in 1895.

• Abundance of Roentgenium:
  • Earth's Crust/p.p.m.: nil
  • Seawater/p.p.m.: nil
  • Atmosphere/p.p.m.: nil
  • Sun (Relative to H=1E¹²): N/A
• Sources of Roentgenium:

  Syntheticly produced element normally produced by fusing two lighter elements in a heavy ion accelerator.

• Uses of Roentgenium:

  Of research interest only.

• Additional Notes:

  In August of 2003 the International Union of Pure and Applied Chemistry (IUPAC) announced the official naming of this element (source: IUPAC, Element 111 is named roentgenium, http://www.iupac.org/news/archives/
  2004/naming111.html, Accessed online Aug 1, 2006).

Roentgenium Menu

• Roentgenium Page One
  • Overview of Roentgenium
  • Roentgenium's Name in Other Languages
  • Atomic Structure of Roentgenium
  • Chemical Properties of Roentgenium
  • Physical Properties of Roentgenium
  • Regulatory / Health
  • Who/When/Where/How

References

A list of reference sources used to compile the data provided on our periodic table of elements can be found on the main periodic table page.

Related Resources

• Anatomy of the Atom
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• Molarity, Molality and Normality
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• Molar Mass Calculations and Javascript Calculator
  Molar mass calculations are explained and there is a JavaScript calculator to aid calculations.
• Chemical Database
  This database focuses on the most common chemical compounds used in the home and industry.

Citing this page

If you need to cite this page, you can copy this text:

Kenneth Barbalace. Periodic Table of Elements - Roentgenium - Rg. EnvironmentalChemistry.com. 1995 - 2024. Accessed on-line: 12/21/2024
https://EnvironmentalChemistry.com/yogi/periodic/Rg.html
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