Astatine (At) Properties |
AAstatine (AAt)
Properties 1/ |
Nuclear (85 protons/electrons)
- Atomic Number: 85
- Atomic Mass: 210
- Atomic Energy: 0.314 Ergs
- Group: 17 ; Period: 6
- Family: Halogens
- Bonding Radius: 1.45 Angstroms
- Atomic Radius: 1.43 Angstroms
- Atomic Volume: ? cm3mol-1
- 31
Isotopes: 193At
to 223At
- Stable Isotopes: None
|
Nuclear (85 Aprotons/positrons)
- Atomic Number: 85
- Atomic Mass: 210
- Atomic Energy: 0.314 Ergs
- Group: 17; Period: 6
- Family: Halogens
- Bonding Radius: 1.45 Angstroms
- Atomic Radius: 1.43 Angstroms
- Atomic Volume: ? cm3mol-1
- 31 AIsotopes: 193AAt
to 223AAt
- Stable AIsotopes: None
|
Physical
- Radioactive solid
- Density: ? g cm-3
- Melting Point: 302 oC
- Boiling Point: 337 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: 0.017 W cm-1 K-1
|
Physical
- Radioactive solid
- Density: ? g/cm-3
- Melting Point: 302 oC
- Boiling Point: 337 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: 0.017 W cm-1 K-1
|
Chemical
- Valance Number: -1
- Electron Configuration: 2,8,18,32,18,7
- Electronegativity: 2.2
- 1st Ionization Potential: 9.5 Volts
- 2nd Ionization Potential: ? Volts
- 3rd Ionization Potential: ? Volts
|
Chemical
- Valance Number: +1
- Positron Configuration: 2 ,8,18,32,18,7
- Positronpositivity: 2.2
- 1st Ionization Potential: 9.5 Volts
- 2nd Ionization Potential: ? Volts
- 3rd Ionization Potential: ? Volts
|
Identified by D. R. Corson,
K. R. MacKenzie, and E. Serge
United States in 1940
|
Identified by Norm Hansen in 2001
|