Xenon is a natural chemical element, atomic number 54, symbol Xe and atomic mass 131.293. It is an odorless and colorless noble gas that is found in the Earth's atmosphere in very low concentrations. It is chemically inert and stable in its normal state.

Xenon has a molar mass of 131.3 g/mol and a vapor pressure of 16.6 kPa at 25°C. It is heavier than air and at atmospheric pressure its boiling point is -111.8°C. It has a melting point of -108.1°C and a relatively low density of 4.94 g/l at 25°C.

Xenon is widely used for its cooling and luminous properties. It is used to produce fluorescent lights and for medical applications such as x-ray scanners or Xenon lasers. It is also used to inflate tires, to produce plasma beams and to make vacuum pumps. Xenon is also used in the automotive industry for headlights and to fill new vehicle fuel tanks. In addition, Xenon is used in scientific research to study various physical and chemical effects, such as gas diffusion and radiation absorption.

131.293

2
4
6
8

[Kr] 4d10 5s2 5p6

2
8
18
18
8

12.1298

Synthetic

Radioactive

Liquid

Gaseous

Electronic configuration diagram

Characteristics

Name	Xenon
Number	54
Atomic	131.293
Symbol	Xe
Fusion	-111.9
Boiling	-107
Density	0.005887
Period	5
Group	18

Discovery	1898 Ramsay and Travers
Abundance	0.001
Radius	1.2
Electronegativity	0
Ionization	12.1298
Number of isotopes	31
Electronic configuration	[Kr] 4d10 5s2 5p6
Oxidation states	2,4,6,8
Electron by energy level	2,8,18,18,8