Polonium (Po) Properties |
APolonium (APo)
Properties 1/ |
Nuclear (84 protons/electrons)
- Atomic Number: 84
- Atomic Mass: 209
- Atomic Energy: 0.312 Ergs
- Group: 2; Period: 6
- Family: Metalloids
- Bonding Radius: 1.46 Angstroms
- Atomic Radius:1.53 Angstroms
- Atomic Volume: 22.23 cm3mol-1
- 29
Isotopes: 190Po
to 218APo
- Stable Isotopes: None
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Nuclear (84 Aprotons/positrons)
- Atomic Number: 84
- Atomic Mass: 209
- Atomic Energy: 0.312 Ergs
- Group: 2; Period: 6
- Family: Metalloids
- Bonding Radius: 1.46 Angstroms
- Atomic Radius: 1.53 Angstroms
- Atomic Volume: 22.23 cm3mol-1
- 29 AIsotopes: 190APo
to 218APo
- Stable AIsotopes: None
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Physical
- Radioactive metal
- Density: 9.4 g cm-3
- Melting Point: 254 oC
- Boiling Point: 962 oC
- Specific Heat: 0.12 J g-1 K-1
- Heat of Vaporization: ? kJ mol-1
- Heat of Fusion: ? kJ mol-1
- Electrical Conductivity: 0.0219 106 cm-1 Ohm-1
- Thermal Conductivity: 0.20 W cm-1 K-1
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Physical
- Radioactive metal
- Density: 9.4 g/cm-3
- Melting Point: 254 oC
- Boiling Point: 962 oC
- Specific Heat: 0.12 J g-1 K-1
- Heat of Vaporization: ? kJ mol-1
- Heat of Fusion: ? kJ mol-1
- Electrical Conductivity: 0.0219 106 cm-1 Ohm-1
- Thermal Conductivity: 0.20 W cm-1 K-1
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Chemical
- Valance Number: +2, +4
- Electron Configuration: 2,8,18,32,18,6
- Electronegativity: 2.0
- 1st Ionization Potential: 8.4 Volts
- 2nd Ionization Potential: ? Volts
- 3rd Ionization Potential: ? Volts
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Chemical
- Valance Number: -2, -4
- Positron Configuration: 2,8,18,32,18,6
- Positronpositivity: 2.0
- 1st Ionization Potential: 8.4 Volts
- 2nd Ionization Potential: ? Volts
- 3rd Ionization Potential: ? Volts
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Identified by Pierre and Marie
Curie
France in 1898
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Identified by Norm Hansen in 2001
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