Francium (Fr) Properties |
AFrancium (AFr)
Properties 1/ |
Nuclear (87 protons/electrons)
- Atomic Number: 87
- Atomic Mass: 223
- Atomic Energy: 0.333 Ergs
- Group: 1; Period: 7
- Family: Alkali
Earth Metals
- Bonding Radius: ? Angstroms
- Atomic Radius: ? Angstroms
- Atomic Volume: ? cm3mol-1
- 33
Isotopes: 200Fr to 232Fr
- Stable Isotopes: None
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Nuclear (87 Aprotons/positrons)
- Atomic Number: 87
- Atomic Mass: 223
- Atomic Energy: 0.333 Ergs
- Group:1 ; Period: 7
- Family: Alkali
Earth Metals
- Bonding Radius: ? Angstroms
- Atomic Radius ? Angstroms
- Atomic Volume: ? cm3mol-1
- 33 AIsotopes: 200AFr
to 232AFr
- Stable AIsotopes: None
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Physical
- Radioactive alkali metal
- Density:? g cm-3
- Melting Point: 27 oC
( o K)
- Boiling Point: 677 oC
( o K)
- Specific Heat: ? J g-1 K-1
- Heat of Vaporization: ? kJ mol-1
- Heat of Fusion: ? kJ mol-1
- Electrical Conductivity: 0.03 106 cm-1 Ohm-1
- Thermal Conductivity: 0.15 W cm-1 K-1
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Physical
- Radioactive alkali metal
- Density: ? g/cm-3
- Melting Point: 27 oC
( o K)
- Boiling Point: 677 oC
( o K)
- Specific Heat: ? J g-1 K-1
- Heat of Vaporization: ? kJ mol-1
- Heat of Fusion: ? kJ mol-1
- Electrical Conductivity: 0.03 106 cm-1 Ohm-1
- Thermal Conductivity: 0.15 W cm-1 K-1
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Chemical
- Valance Number: +1
- Electron Configuration: 2,8,18,32,18,8,1
- Electronegativity: 0.7
- 1st Ionization Potential: ? Volts
- 2nd Ionization Potential: ? Volts
- 3rd Ionization Potential: ? Volts
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Chemical
- Valance Number: -1
- Positron Configuration: 2,8,18,32,18,8,1
- Positronpositivity: 0.7
- 1st Ionization Potential: ? Volts
- 2nd Ionization Potential: ? Volts
- 3rd Ionization Potential: ? Volts
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Identified by Marguerite
Derey
France in 1939
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Identified by Norm Hansen in 2001
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