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Fr |
Francium |
Fr | |
Atomic number |
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87 | Atomic weight | 223.0197 amu | Stable and very long lived isotopes | N/A | Electronic configuration | 1s22s22p63s23p63d104s24p64d104f145s25p65d106s26p67s1 | Sample reactions | Fr + H2O = FrOH + H2
| Density |
1.87 g/cm3 (STP) |
Melting | 27 °C |
Boiling | 677 °C |
Covalent radius | N/A Å |
Van der Waals radius | Å |
Ionic radius | 1.8 Å |
First ionization potential | 3.938 eV = 31765 cm-1 = 380.0 kJ/mol
|
Electron affinity | -0.456 eV = -3678 cm-1 = -44.0 kJ/mol |
Wikipedia article about Francium |
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