Mendelevium Elemental Symbol
Mendelevium



French German Italian Portuguese Spanish Swedish
Mendélévium Mendelevium Mendelevio Mendelévio Mendelevio Mendelevium

Mendelevium Bohr ModelMendelevium is a Block F, Group 3, Period 7 element. The number of electrons in each of mendelevium's shells is 2, 8, 18, 32, 31, 8, 2 and its electronic configuration is [Rn] 5f13 7s2. The mendelevium atom has a Van der Waals radius is 246.pm. In its elemental form, mendelevium's CAS number is 7440-11-1. Mendelevium is radioactive and therefore considered harmful. Mendelevium was discovered by Albert Ghiorso, Bernard G. Harvey, Gregory R. Choppin, Stanley G. Thompson and Glenn T. Seaborg at the Lawrence Berkeley Natinal Laboratory in 1955. Mendelevium was named after Russian chemist Dmitri Ivanovitch Mendeleyev, who created the periodic table. Mendelevium is a synthetic element that is usually produced by bombarding einsteinium with alpha particles. Mendelevium was the ninth transuranic element of the actinide series to be discovered.

Mendelevium information, including technical data, safety data and its high purity properties, research, applications and other useful facts are discussed below. Scientific facts such as the atomic structure, ionization energy, abundance on earth, conductivity and thermal properties are included.


  • Properties
  • Research
  • Isotopes
  • Other Elements

Mendelevium Properties


GENERAL PROPERTIES   PHYSICAL PROPERTIES  
Symbol: Md Melting Point: 827 oC, 1520.6 oF, 1100.15 K
Atomic Number: 101 Boiling Point: N/A
Atomic Weight: 258 Density: N/A
Element Category: Actinide Liquid Density @ Melting Point: N/A
Group, Period, Block: n/a, 7, f Specific Heat: N/A
    Heat of Vaporization N/A
CHEMICAL STRUCTURE Heat of Fusion N/A
Electrons: 101 Thermal Conductivity: N/A
Protons: 101 Thermal Expansion: N/A
Neutrons: 157 Electrical Resistivity: N/A
Electron Configuration: [Rn] 5f137s2 Electronegativity: 1.3 (Pauling scale)
Atomic Radius: N/A Tensile Strength: N/A
Covalent Radius: N/A Molar Heat Capacity: N/A
Van der Waals radius: 246 pm Young's Modulus: N/A
Oxidation States: 2, 3 Shear Modulus: N/A
Phase: (predicted) Bulk Modulus: N/A
Crystal Structure: N/A Poisson Ratio: N/A
Magnetic Ordering: N/A Mohs Hardness: N/A
1st Ionization Energy: 635 kJ·mol−1 (estimated) Vickers Hardness: N/A
2nd Ionization Energy: N/A Brinell Hardness: N/A
3rd Ionization Energy: N/A Speed of Sound: N/A
       
IDENTIFIERS   MISCELLANEOUS  
CAS Number: 7440-11-1 Abundance in typical human body, by weight: N/A
ChemSpider ID: 22385 Abundance in typical human body, by atom: N/A
PubChem CID: 23943 Abundance in universe, by weight: N/A
MDL Number: N/A Abundance in universe, by atom: N/A
EC Number: N/A Discovered By: Lawrence Berkeley Nat'l Laboratory
Beilstein Number: N/A Discovery Date: 1955
SMILES Identifier: [Md]  
InChI Identifier: InChI=1S/Md Other Names: Mendelevio
InChI Key: MQVSLOYRCXQRPM-UHFFFAOYSA-N  
       
       
       
       
       


Recent Research & Development for Mendelevium

  • K.J. Moody, R.W. Lougheed, J.F. Wild, R.J. Dougan, E.K. Hulet, R.W. Hoff, C.M. Henderson, R.J. Dupzyk, R.L. Hahn, K. Sümmerer, G.D. O'Kelley, G.R. Bethune, Decay properties of heavy mendelevium isotopes, Nuclear Physics A, Volume 563, Issue 1, 11 October 1993
  • Y. Legoux, J. Merini, Diffusion thermique du mendélévium dans le tantale, Journal of the Less Common Metals, Volume 160, Issue 2, May 1990
  • , Metabolic data for mendelevium, Annals of the ICRP, Volume 19, Issue 4, 1988
  • , Mendelevium, Annals of the ICRP, Volumes 11–13, Part 2, 1983
  • , Mendelevium, Annals of the ICRP, Volume 8, Issues 1–3, 1982
  • , Metabolic data for mendelevium, Annals of the ICRP, Volume 6, Issues 2–3, 1981
  • F. David, K. Samhoun, E.K. Hulet, P.A. Baisden, R. Dougan, J.H. Landrum, R.W. Lougheed, J.F. Wild, G.D. O'Kelley, Radiopolarography of mendelevium in aqueous solutions, Journal of Inorganic and Nuclear Chemistry, Volume 43, Issue 11, 1981
  • K. Samhoun, F. David, R.L. Hahn, G.D. O'Kelley, J.R. Tarrant, D.E. Hobart, Electrochemical study of mendelevium in aqueous solution: No evidence for monovalent ions, Journal of Inorganic and Nuclear Chemistry, Volume 41, Issue 12, 1979
  • E.P. Horwitz, C.A.A. Bloomquist, The tracer chemistry of trivalent mendelevium with di-(2-ethylhexyl)orthophosphoric acid, Inorganic and Nuclear Chemistry Letters, Volume 5, Issue 9, September 1969
  • Jaromír Malý, The amalgamation behavior of heavy elements—IV the tracer chemistry of divalent mendelevium, Journal of Inorganic and Nuclear Chemistry, Volume 31, Issue 3, March 1969


Mendelevium Isotopes


Mendelevium is an artificial element. It has no stable isotopes.