| Atomic number | : | 17 |
| Atomic mass | : | 35.435 g.mol-1 |
| Electronegativity according to Pauling | : | 3.0 |
| Density | : | 3.21.8*10*3g.cm3 at 20 °C |
| Melting point | : | -101 °C |
| Boiling point | : | -34.6 °C |
| Vanderwaals radius | : | 0.127 nm |
| Ionic radius | : | 0.184 nm (-2) ; 0.029 (+6) |
| Isotopes | : | 4 |
| Electronic shell | : | [Ne] 3s23p5 |
| Energy of first ionisation | : | 1255.7 kJ.mol-1 |
| Energy of second ionisation | : | 2298 kJ.mol-1 |
| Energy of third ionisation | : | 3822 kJ.mol-1 |
| Standard potential | : | -1.36 V |
| Discovered by | : | Carl Wilhelm Scheele in 1774 |
Periodic Table of Elements
