Xenon Properties Atomic symbol | Xe Atomic number | 54 Atomic mass | 131.3 Number of Stable Isotopes | 36 Density (grams per cc) | 0.00588 g/cm3 Other Information Date of discovery | September 1898 Name of discoverer | William Ramsay & Morris Travers Uses | photographic flashes, high pressure arc lamps, radiation detection, medical general anesthetic and imaging, and ion thruster propellant. Xenon (ZEN-on or ZEE-non)is a noble gas. Since it is an almost completely unreactive, it is often used in industrial processes as a coolant. However, in 1962, Xenon was shown to react with Fluorine, to produce Xenon Hexafluoride. Due to the masses of the heavier noble gases, it fulfills the prediction that heavier noble gases should be able to react. Periodic Table of the Elements 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 1.008 | | | | | | | | | | | | | | | | | 4.003 6.939 9.0122 | | | | | | | | | | | 10.811 12.011 14.007 15.999 18.998 10.183 22.99 24.312 | | | | | | | | | | | 26.982 28.086 30.974 32.064 35.453 39.948 39.102 40.08 44.956 47.9 50.942 51.996 54.938 55.847 58.933 58.71 63.546 65.37 69.72 72.59 74.922 78.96 79.904 83.8 85.47 87.62 88.905 91.22 92.906 95.94 [97] 101.07 102.91 106.4 107.87 112.4 114.82 118.69 121.75 127.6 126.9 131.3 132.91 137.34 57* 138.91 178.49 180.95 183.85 186.2 190.2 192.2 195.09 196.97 200.59 204.37 207.19 208.98 210 210 222 215 226.03 89** 227.03 104 [261] 105 [262] 106 [266] 107 [264] 108 [265] 109 [268] 110 [271] 111 [272] 112 [277] 113 [284] 114 [289] 115 [288] 116 [292] 117 [293] 118 [294] | | | | | | | | | | | | | | | | | *Lanthanides | 140.12 140.91 144.24 145 150.35 151.96 157.25 158.92 162.5 164.93 167.26 168.93 173.04 174.97 | | | | | | | | | | | | | | | | | | | **Actinides | 232.04 231 238.03 237.05 239.05 241.06 244.06 249.08 252.08 252.08 100 257.1 101 258.1 102 259.1 103 262.11 | | | | | | | | | | | | | | | | | | |