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Periodic Table of Elements

Element Einsteinium - Es

Comprehensive data on the chemical element Einsteinium is provided on this page; including scores of properties, element names in many languages, most known nuclides of Einsteinium. 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.

Einsteinium Menu

• Einsteinium Page One
  • Overview of Einsteinium
  • Einsteinium's Name in Other Languages
  • Atomic Structure of Einsteinium
  • Chemical Properties of Einsteinium
  • Physical Properties of Einsteinium
  • Regulatory / Health
  • Who/When/Where/How
• Einsteinium Page Two
  • Nuclides / Isotopes
  • Potential Parent Nuclides

Overview of Einsteinium

• Atomic Number: 99
• Period: 7
• Series: Actinides

Einsteinium's Name in Other Languages

• Latin: Einsteinium
• Czech: Einsteinium
• Croatian: Einsteinij
• French: Einsteinium
• German: Einsteinium - s
• Italian: Einsteinio
• Norwegian: Einsteinium
• Portuguese: Einstênio
• Russian: Эйнштейний
• Spanish: Einstenio
• Swedish: Einsteinium

Atomic Structure of Einsteinium

• Atomic Radius:
• Atomic Volume:
• Covalent Radius:
• Cross Section (Thermal Neutron Capture)σ_a/barns: 160
• Crystal Structure: Cubic face centered

  

• Electron Configuration:

  1s² 2s²p⁶ 3s²p⁶d¹⁰ 4s²p⁶d¹⁰f¹⁴ 5s²p⁶d¹⁰f¹¹ 6s²p⁶ 7s²

• Electrons per Energy Level: 2,8,18,32,29,8,2

  Shell Model
  

• Ionic Radius: 0.925Å
• Filling Orbital: 5f¹¹
• Number of Electrons (with no charge): 99
• Number of Neutrons (most common/stable nuclide): 153
• Number of Protons: 99
• Oxidation States: 3
• Valence Electrons: 5f¹¹ 7s²

Chemical Properties of Einsteinium

• Electrochemical Equivalent: 4.74g/amp-hr
• Electron Work Function:
• Electronegativity: 1.3 (Pauling); 1.2 (Allrod Rochow)
• Heat of Fusion: kJ/mol
• Incompatibilities:

• Ionization Potential
  • First: 6.42
• Valence Electron Potential (-eV):

Physical Properties of Einsteinium

• Atomic Mass Average: 252
• Boiling Point:
• Coefficient of lineal thermal expansion/K^-1: N/A
• Conductivity

  Electrical:
  Thermal: 0.1 W/cmK

• Description:

  Man made radioactive metal, which is not found in nature

• Flammablity Class:
• Freezing Point: see melting point
• Heat of Vaporization: kJ/mol
• Melting Point: 1133K 860°C 1580°F
• Physical State (at 20°C & 1atm): Solid
• Specific Heat:

Regulatory / Health

• CAS Number
  • 7429-92-7
• NFPA 704
  • Health:
  • Fire:
  • Reactivity:
  • Special Hazard: Radioactive<
  • OSHA Permissible Exposure Limit (PEL)
    • No limits set by OSHA
  • OSHA PEL Vacated 1989
    • No limits set by OSHA
  • NIOSH Recommended Exposure Limit (REL)
    • No limits set by NIOSH
  • 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: G.R. Choppin, S.G. Thompson, A. Ghiorso and G.G. Harvey
  • Discovery Location: Berkeley California United States
  • Discovery Year: 1952
  • Name Origin:

    After the scientist Albert Einstein.

  • Abundance of Einsteinium:
    • 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 Einsteinium:

    Made by bombarding uranium with neutrons. World production is probably less than 1 gram per year.

  • Uses of Einsteinium:

    None

  • Additional Notes:

    In 1952 Einsteinium was discovered in the debris of a thermonuclear explosion test in the Pacific.

  Einsteinium Menu

  • Einsteinium Page One
    • Overview of Einsteinium
    • Einsteinium's Name in Other Languages
    • Atomic Structure of Einsteinium
    • Chemical Properties of Einsteinium
    • Physical Properties of Einsteinium
    • Regulatory / Health
    • Who/When/Where/How
  • Einsteinium Page Two
    • Nuclides / Isotopes
    • Potential Parent Nuclides

  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.

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  • Chemical Database
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  Kenneth Barbalace. Periodic Table of Elements - Einsteinium - Es. EnvironmentalChemistry.com. 1995 - 2024. Accessed on-line: 12/21/2024
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