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Periodic Table of Elements

Element Mendelevium - Md

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

Mendelevium Menu

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

Overview of Mendelevium

• Atomic Number: 101
• Period: 7
• Series: Actinides

Mendelevium's Name in Other Languages

• Latin: Mendelevium
• Czech: Mendelevium
• Croatian: Mendelevij
• French: Mendelevium
• German: Mendelevium - s
• Italian: Mendelevio
• Norwegian: Mendelevium
• Portuguese: Mendelévio
• Russian: Менделевий
• Spanish: Mendelevio
• Swedish: Mendelevium

Atomic Structure of Mendelevium

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

• Electron Configuration:

  1s² 2s²p⁶ 3s²p⁶d¹⁰ 4s²p⁶d¹⁰f¹⁴ 5s²p⁶d¹⁰f¹³ 6s²p⁶ 7s²

• Electrons per Energy Level: 2,8,18,32,31,8,2

  Shell Model
  

• Ionic Radius:
• Filling Orbital: 5f¹³
• Number of Electrons (with no charge): 101
• Number of Neutrons (most common/stable nuclide): 157
• Number of Protons: 101
• Oxidation States: 3
• Valence Electrons: 5f¹³ 7s²

Chemical Properties of Mendelevium

• Electrochemical Equivalent: 3.21g/amp-hr
• Electron Work Function:
• Electronegativity: 1.3 (Pauling); 1.2 (Allrod Rochow)
• Heat of Fusion: kJ/mol
• Incompatibilities:

• Ionization Potential
  • First: 6.58
• Valence Electron Potential (-eV):

Physical Properties of Mendelevium

• Atomic Mass Average: 258
• Boiling Point:
• Coefficient of lineal thermal expansion/K^-1: N/A
• Conductivity

  Electrical:
  Thermal: 0.1 W/cmK

• Description:

  Man made radioactive metal. Does not occur in nature.

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

Regulatory / Health

• CAS Number
  • 7440-11-1
• 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: Albert Ghiorso,B.G. Harvey, G.R. Chopplin, S.G.Thompson and G.T.Seaborg
  • Discovery Location: Berkeley California United States
  • Discovery Year: 1955
  • Name Origin:

    After the Russian chemist Dmitri Ivanovitch Mendeleyev, who devised the periodic table.

  • Abundance of Mendelevium:
    • 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 Mendelevium:

    Made by bombarding einsteinium with helium ions. Realitively little mendelevium has ever been produced.

  • Uses of Mendelevium:

    None

  • Additional Notes:

  Mendelevium Menu

  • Mendelevium Page One
    • Overview of Mendelevium
    • Mendelevium's Name in Other Languages
    • Atomic Structure of Mendelevium
    • Chemical Properties of Mendelevium
    • Physical Properties of Mendelevium
    • Regulatory / Health
    • Who/When/Where/How
  • Mendelevium 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
    This database focuses on the most common chemical compounds used in the home and industry.

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