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Fr
in WebElements
in X-Ray info
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Fr, 87
francium (English)
francium, m. (French)
Francium, n. (German)
frantsij (Russian)
francium (Swedish)
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| Symbol, number | Fr, 87 (alkali metal), Group: 1; 1A |
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| Weight | 223 |
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| In Nature | |
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| Discovered | 1939, by Marguerite Perey (France) |
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| Melting Temperature | 300 K (27 °C) |
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| Boiling Temperature | 950 K (677 °C) |
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| Thermal | Conductivity: 15 [300 K] (calc.) W/Km |
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| Ionisation [kJ/mol] |
| M--> |
M+--> |
M2+--> |
M3+--> |
M4+--> |
M5+--> |
M6+--> |
M7+--> |
M8+--> |
M9+-->M10+ |
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| Thermodynamics |
| State |
DfH° |
DfG° |
S° |
CpH |
H°298.15-H°0 |
| [kJ/mol] |
[J/Kmol] |
[kJ/mol] |
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| Isotopes |
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Mass |
In nature |
Half-life |
Spin |
m/mN |
NMM |
Decay |
| Fr |
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