Xenon is an element with a larger atomic number (ie, a heavier element) in an inert gas, and the xenon atom has a larger radius. The atomic number is 54, the peripheral electron arrangement is 5s2, 5p6, and it is located in the fifth cycle of Group 18 (IUPAC new regulations, which is the original Group 0), the atomic covalent radius is 209 picometers, and the first ionization energy is 1172kJ / mol. Elemental matter consists of monoatomic molecules. Rare gas, colorless, odorless, odorless, density 5.887 kg / m3, melting point -111.9 ° C, boiling point -107.1 ± 3 ° C, it can dissolve 110.9 ml (volume) per liter of water at 20 ° C. Can absorb X-rays.
- Compared with argon-filled bulbs with the same power, bulbs filled with xenon gas have the advantages of high luminous rate, small size, long life, power saving, etc.
- Due to its particularly strong ability to penetrate fog, it can be used as a fog navigation light.
- The xenon lamp can generate a high temperature of 2500 ℃ after the concave surface is focused, which can be used for welding or cutting refractory metals such as titanium and molybdenum.
- In medicine, xenon is a contrast agent for deep anesthetic X-ray photography without side effects.