Einsteinium Elemental Symbol
Einsteinium



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Einsteinium Einsteinium Einstenio Einstânio Einstenio Einsteinium

Einsteinium Bohr ModelEinsteinium is a Block F, Group 3, Period 7 element. The number of electrons in each of einsteinium's shells is 2, 8, 18, 32, 29, 8, 2 and its electronic configuration is [Rn] 5f11 7s2. The einsteinium atom has a radius of 186.pm. In its elemental form, einsteinium's CAS number is 7429-92-7. Einsteinium was discovered by Albert Ghiorso at the Lawrence Berkeley Natinal Laboratory in 1952 and named in honor of Albert Einstein. Einsteinium was the seventh transuranic element of the actinide series to be discovered.

Einsteinium 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

Einsteinium Properties


GENERAL PROPERTIES   PHYSICAL PROPERTIES  
Symbol: Es Melting Point: 860 oC, 1580 oF, 1133.15 K
Atomic Number: 99 Boiling Point: N/A
Atomic Weight: 252 Density: 8.84 g·cm−3
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: 99 Thermal Conductivity: N/A
Protons: 99 Thermal Expansion: N/A
Neutrons: 153 Electrical Resistivity: N/A
Electron Configuration: [Rn] 5f117s2 Electronegativity: 1.3 (Pauling scale)
Atomic Radius: pm (estimated) Tensile Strength: N/A
Covalent Radius: pm (estimated) Molar Heat Capacity: N/A
Van der Waals radius: N/A Young's Modulus: N/A
Oxidation States: 2, 3, 4 Shear Modulus: N/A
Phase: Solid Bulk Modulus: N/A
Crystal Structure: face-centered cubic Poisson Ratio: N/A
Magnetic Ordering: paramagnetic Mohs Hardness: N/A
1st Ionization Energy: 619 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: 7429-92-7 Abundance in typical human body, by weight: N/A
ChemSpider ID: 22356 Abundance in typical human body, by atom: N/A
PubChem CID: 23913 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: 1952
SMILES Identifier: [Es]  
InChI Identifier: InChI=1S/Es Other Names: Einstenio, Einstânio
InChI Key: CKBRQZNRCSJHFT-UHFFFAOYSA-N  
       
       
       
       
       


Recent Research & Development for Einsteinium

  • J.R. Peterson, N. Erdmann, M. Nunnemann, K. Eberhardt, G. Huber, J.V. Kratz, G. Passler, O. Stetzer, P. Thörle, N. Trautmann, A. Waldek, Determination of the first ionization potential of einsteinium by resonance ionization mass spectroscopy (RIMS), Journal of Alloys and Compounds, Volumes 271–273, 12 June 1998
  • S.A. Kulyukhin, L.N. Auerman, V.L. Novichenko, N.B. Mikheev, I.A. Rumer, A.N. Kamenskaya, L.A. Goncharov, A.I. Smirnov, Production of microgram quantities of einsteinium-253 by the reactor irradiation of californium, Inorganica Chimica Acta, Volume 110, Issue 1, July 1985
  • Joel F. Liebman, Conceptual problems in noble gas and fluorine chemistry, VII1: On the possible existence of einsteinium and proactinium hexafluoride, Inorganic and Nuclear Chemistry Letters, Volume 14, Issues 6–7, 1978, Pages 245-247
  • Irshad Ahmad, Frank Wagner Jr., Half-life of the longest-lived einsteinium isotope-252Es, Journal of Inorganic and Nuclear Chemistry, Volume 39, Issue 9, 1977
  • R.L. Fellows, J.R. Peterson, M. Noé, J.P. Young, R.G. Haire, X-ray diffraction and spectroscopic studies of crystalline einsteinium(III) bromide, 253EsBr3, Inorganic and Nuclear Chemistry Letters, Volume 11, Issue 11, November 1975
  • S. Hubert, M. Hussonnois, L. Brillard, G. Goby, R. Guillaumont, Determination simultanee de constantes de formation de complexes citrique de l'Americium, du curium, du Californium, de l'Einsteinium et du fermium, Journal of Inorganic and Nuclear Chemistry, Volume 36, Issue 10, October 1974
  • R.G. Haire, R.D. Baybarz, Identification and analysis of einsteinium sesquioxide by electron diffraction, Journal of Inorganic and Nuclear Chemistry, Volume 35, Issue 2, February 1973
  • N.B. Mikheev, V.I. Spitsyn, A.N. Kamenskaya, N.A. Rozenkevitch, I.A. Rumer, L.N. Auerman, Reduction of einsteinium and californium chlorides to the divalent state in aqueous ethanolic solutions, Inorganic and Nuclear Chemistry Letters, Volume 8, Issue 10, October 1972
  • R.M. Harbour, Elution positions of europium, berkelium, terbium and einsteinium from a cation exchange resin column with a-hydroxyisobutyric acid, Journal of Inorganic and Nuclear Chemistry, Volume 34, Issue 8, August 1972
  • L.J. Nugent, R.D. Baybarz, G.K. Werner, H.A. Friedman, Intramolecular energy transfer and sensitized luminescence in an einsteinium ß-diketone chelate and the lower lying electronic energy levels of Es(III), Chemical Physics Letters, Volume 7, Issue 2, 15 October 1970



Einsteinium Isotopes


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