Curium (Cm) Properties |
ACurium (ACm)
Properties 1/ |
Nuclear (96 protons/electrons)
- Atomic Number: 96
- Atomic Mass: 247
- Atomic Energy: 0.369 Ergs
- Group: 3; Period: 7
- Family: Rare Earth:
Actinide Series
- Bonding Radius: ? Angstroms
- Atomic Radius: ? Angstroms
- Atomic Volume: 18.28 cm3mol-1
- 20
Isotopes: 233Cm
to 252Cm
- Stable Isotopes:
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Nuclear (96 Aprotons/positrons)
- Atomic Number: 96
- Atomic Mass: 247
- Atomic Energy: 0.369 Ergs
- Group: 3; Period: 7
- Family: Rare Earth:
Actinide Series
- Bonding Radius: ? Angstroms
- Atomic Radius: ? Angstroms
- Atomic Volume: 18.28 cm3mol-1
- 20 AIsotopes: 233ACm
to 252ACm
- Stable AIsotopes: None
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Physical
- Man made radioactive metal
- Density: 13.5 g cm-3
- Melting Point: 1,340 oC
- Boiling Point: ? oC
- Specific Heat: ? J g-1 K-1
- Heat of Vaporization: ? kJ mol-1
- Heat of Fusion: 15 kJ mol-1
- Electrical Condu15ctivity: ? 106 cm-1 Ohm-1
- Thermal Conductivity: 0.1 W cm-1 K-1
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Physical
- Radioactive metal
- Density: 13.5 g/cm-3
- Melting Point: 1,340 oC
- Boiling Point: ? oC
- Specific Heat: ? J g-1 K-1
- Heat of Vaporization: ? kJ mol-1
- Heat of Fusion: 15 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: 2,8,18,32,25,9,2
- Electronegativity: 1.3
- 1st Ionization Potential: 6.0 Volts
- 2nd Ionization Potential: ? Volts
- 3rd Ionization Potential: ? Volts
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Chemical
- Valance Number: -3
- Positron Configuration: 2,8,18,32,25,9,2
- Positronpositivity: 1.3
- 1st Ionization Potential: 6.0 Volts
- 2nd Ionization Potential: ? Volts
- 3rd Ionization Potential: ? Volts
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Identified by G. T.
Seaborg,
R. A. James, and A. Ghiorso
United States in 1944
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Identified by Norm Hansen in 2001
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