| Appearance | Xenonis a colourless, odorless gas. |
| Discovery | 1898 by Sir William Ramsay and M.W. Travers nn London, England. |
| Electronic Configuration | simple: 2.8.18.18.8 ADVANCED: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5s2 5p6 or [Kr] 3d10 4s2 4p6 4d10 5s2 5p6 for short |
| Isotopes | 127Xe has a half-life of 36.4 days; 129Xe 26.4%; 130Xe 4.1%; 131Xe 21.2%; 132Xe 26.9%; 133Xe has a half-life of 5.27 days; 134Xe 10.4% and 136Xe 8.9%. |
| Source | Xenon is present in the atmosphere at a concentration of just 0.086 ppm by volume. However, it can be found in the gases which evolve from certain mineral springs. Commercially, it is obtained by the fractional distillation of air. |
| Common uses | Xenophon is little used outside of research. However, it is used in certain specialised light sources, which require an instant, intense light, such as the high-speed electronic flashbulbs used by photographers. Xenon, in a vacuum tube, produces a beautiful blue glow when excited by an electrical discharge, and finds applications in electron tubes, stroboscopic lights on bactericidal lamps. |
| Test | - |
| Melting point in Kelvin | 131.29 |
| Boiling point in Kelvin | 161.3 |
| Density in kg/m3 | 5.9 at 273K |
| Oxidation States | 0 +2 +4 +6 and +8 |
| Electron Affinity in kJmol-1 | -41 |
| IE1 in kJmol-1 | 1170.4 |
| IE2 in kJmol-1 | 2046 |
| IE3 in kJmol-1 | 3097 |
| IE4 in kJmol-1 | 4300 |
| IE5 in kJmol-1 | 5500 |
| IE6 in kJmol-1 | 6600 |
| IE7 in kJmol-1 | 9300 |
| IE8 in kJmol-1 | 10600 |
| IE9 in kJmol-1 | 19800 |
| IE10 in kJmol-1 | 23000 |
| Enthalpy of Fusion in kJmol-1 | 3.1 |
| Enthalpy of Vaporisation in kJmol-1 | 12.65 |
| Average bond energy kJmol-1 | Xe-O 84. |
