| Atomic mass | : | 15.998403 g.mol-1 |
| Electronegativity according to Pauling | : | 4 |
| Density | : | 1.8*10*3g.cm3 at 20 °C |
| Melting point | : | -219.6 °C |
| Boiling point | : | -188 °C |
| Vanderwaals radius | : | 0.135 nm |
| Ionic radius | : | 0.136 nm (-1) ; 0.007 (+7) |
| Isotopes | : | 2 |
| Electronic shell | : | [He] 2s22p5 |
| Energy of first ionisation | : | 1680.6 kJ.mol-1 |
| Energy of second ionisation | : | 3134 kJ.mol-1 |
| Energy of third ionisation | : | 6050 kJ.mol-1 |
| Standard potential | : | -2.87 V |
| Discovered by | : | Moissan in 1886 |
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