Einsteinium (Es) Properties |
AEinsteinium (AEs)
Properties 1/ |
Nuclear (99 protons/electrons)
- Atomic Number: 99
- Atomic Mass: 252
- Atomic Energy: 0.376 Ergs
- Group: 3; Period: 7
- Family: Rare Earth:
Actinide Series
- Bonding Radius: ? Angstroms
- Atomic Radius: ? Angstroms
- Atomic Volume: ? cm3mol-1
- 18 Isotopes: 240Es
to 257Es
- Stable Isotopes: None
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Nuclear (99 Aprotons/positrons)
- Atomic Number: 99
- Atomic Mass: 252
- Atomic Energy: 0.376 Ergs
- Group: 3; Period: 7
- Family: Rare Earth:
Actinide Series
- Bonding Radius: ? Angstroms
- Atomic Radius: ? Angstroms
- Atomic Volume: ? cm3mol-1
- 18 AIsotopes: 240AEs
to 257AEs
- Stable AIsotopes: None
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Physical
- Man made radioactive metal
- Density:? g cm-3
- Melting Point: ? oC
- Boiling Point: ? oC
- Specific Heat: ? J g-1 K-1
- Heat of Vaporization: ? kJ mol-1
- Heat of Fusion: ? kJ mol-1
- Electrical Conductivity: ? 106 cm-1 Ohm-1
- Thermal Conductivity: 0.1 W cm-1 K-1
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Physical
- Radioactive metal
- Density: ? g/cm-3
- Melting Point: ? oC
- Boiling Point: ? oC
- Specific Heat: ? J g-1 K-1
- Heat of Vaporization: ? kJ mol-1
- Heat of Fusion: ? kJ mol-1
- Electrical Conductivity: ? 106 cm-1 Ohm-1
- Thermal Conductivity: 0.1 W cm-1 K-1
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Chemical
- Valance Number: +3
- Electron Configuration: 2,8,18,32,29,8,2
- Electronegativity: 1.3
- 1st Ionization Potential: 6.4 Volts
- 2nd Ionization Potential: ? Volts
- 3rd Ionization Potential: ? Volts
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Chemical
- Valance Number: -3
- Positron Configuration: 2,8,18,32,29,8,2
- Positronpositivity: 1.3
- 1st Ionization Potential: 6.4 Volts
- 2nd Ionization Potential: ? Volts
- 3rd Ionization Potential: ? Volts
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Identified by Argonne, Los Alamos,
and University of California
United States in 1952
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Identified by Norm Hansen in 2001
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