Xenon

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Other names/abbreviations:

Xe

Element no:	54
Element group:	18 (IUPAC) VIII A (American labelling) VIII B (European labelling) Noble gasses
Element type:	Nonmetals
CAS-Number:	7440-63-3
EINECS-Number:	231-172-7

Chemical properties

Reaction of xenon with acids
Xenon does not react with acids.


Reaction of xenon with air
Xenon does not react with air.


Reaction of xenon with bases
Xenon does not react with bases.


Reaction of xenon with halogens
Xenon can be brought to react with fluorine, F₂ [4]:

Xe(g) + 2 F₂(g) XeF₄(s), mix gasses at 400°C then cool to -78°C
Xe(g) + F₂(g) XeF₂(s)
Xe(g) + 3 F₂(g) XeF₆(s)

The xenon fluorides are used for synthesis of other xenon compounds [4].


Reaction of xenon with the water
Xenon does not react with water but dissolves slightly; approximately 108.1 cm³/kg at 20°C [1].


Solubility
Water: 108.1 cm³/L (Approximately, 20°C) [3]

Safety

Symbol: -
R-phrases: -
S-phrases: -

Physical properties

Appearance
	Physical state @ 20°C:	Gas [3]
	Color:	Colourless [3]

Bulk properties
	Molecular weight (g/mol):	131.29(2) [1]
	Melting point (°C):	-111.75 [2]
	Boiling point (°C):	-108.04 [2]
	Density (g/cm3):	0.0058971 [1]
	Molar volume (cm3):	35.92
	Velocity of sound (m/s):	1090

Optical properties
	Refractive index:	1.000702

Thermodynamic properties
	ΔfH°gas (kJ/mol):	0.0 [2]
	ΔfH°fusion (kJ/mol):	1.81 [2]
	S°gas (J/mol):	169.7 [2]
	Cp (gas) (J/mol·K):	20.786 (25 °C) [2]
	Critical temperature (°C):	16.58 [2]

Electronic properties
	Electron configuration:	1s2-2s2-2p6-3s2-3p6-4s2-3d10-4p6-4d10-5s2-5p6

Conductivity
	Thermal (W/m·K):	0.00506 [1]

Misc.
	Vapour pressure (Pa):	4189600 (20°C) [3]

Occurence, isolation & synthesis

Isolation
Xenon is produced by fractional destillation of liquid air [4].

References

1: Greenwood,N.N., Earnshaw,A. Chemistry of the elements
2^nd edition (1997) Edited by Greenwood,N.N., Earnshaw,A. pp. 1-1340, Butterworth-Heinemann. Oxford. Great Britain

2: CRC Handbook of Chemistry and Physics
75^th edition (1994) Edited by Lide,D.R. , CRC Press Inc. Boca Raton, USA

3: Merck. ChemDAT The Merck Chemical Database Ver. 1.1.5

4: General chemistry
7^th edition (1984) Edited by Holtzclaw, Jr.,H.F., Robinson,W.R. & Nebergall,W.H. pp. 1-932. D.C. Heath and Company. Lexington

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© Michael Pilgaard
Created: March 7, 2008
Last update: October 9, 2008