Erbium (Er) Properties |
AErbium (AEr)
Properties 1/ |
Nuclear (68 protons/electrons)
- Atomic Number: 68
- Atomic Mass: 167.26
- Atomic Energy: 0.250 Ergs
- Group: 3; Period: 6
- Family: Rare Earth:
Lanthanide Series
- Bonding Radius: 1.57 Angstroms
- Atomic Radius: 2.45 Angstroms
- Atomic Volume: 18.4 cm3mol-1
- 34
Isotopes: 144Er to 177Er
- Stable Isotopes: 162Er,
164Er, 166Er,
167Er, 168Er, 170Er
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Nuclear (68 Aprotons/positrons)
- Atomic Number: 68
- Atomic Mass: 167.26
- Atomic Energy: 0.250 Ergs
- Group: 3; Period: 6
- Family: Rare Earth:
Lanthanide Series
- Bonding Radius: 1.57 Angstroms
- Atomic Radius: 2.45 Angstroms
- Atomic Volume: 18.4 cm3mol-1
- 34 AIsotopes: 144AEr
to 177AEr
- Stable AIsotopes: 162AEr,
164AEr, 166AEr,
167AEr, 168AEr, 170AEr
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Physical
- Grayish-silver metal
- Density: 9.05 g cm-3
- Melting Point: 1,522 oC
- Boiling Point: 2,510 oC
- Specific Heat: 0.17 J g-1 K-1
- Heat of Vaporization: 261 kJ mol-1
- Heat of Fusion: 19.9 kJ mol-1
- Electrical Conductivity: 0.0117 106 cm-1 Ohm-1
- Thermal Conductivity: 0.143 W cm-1 K-1
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Physical
- Grayish-silver metal
- Density: 9.05 g/cm-3
- Melting Point: 1,522 oC
- Boiling Point: 2,510 oC
- Specific Heat: 0.17 J g-1 K-1
- Heat of Vaporization: 261 kJ mol-1
- Heat of Fusion: 19.9 kJ mol-1
- Electrical Conductivity: 0.0117 106 cm-1 Ohm-1
- Thermal Conductivity: 0.143 W cm-1 K-1
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Chemical
- Valance Number: +3
- Electron Configuration: 2,8,18,30,8,2
- Electronegativity: 1.24
- 1st Ionization Potential: 6.1 Volts
- 2nd Ionization Potential: 11.9 Volts
- 3rd Ionization Potential: 22.7 Volts
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Chemical
- Valance Number: -3
- Positron Configuration: 2,8,18,30,8,2
- Positronpositivity: 1.24
- 1st Ionization Potential: 6.1 Volts
- 2nd Ionization Potential: 11.9 Volts
- 3rd Ionization Potential: 22.7 Volts
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Identified by Carl
Mosander
Sweden in 1843
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Identified by Norm Hansen in 2001
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