XENON, Xe (54)

Xenon is a colourless, dense, odourless noble gas, that occurs in the Earth’s atmosphere in trace amounts and naturally occurring xenon consists of eight stable isotopes.

ELEMENT BRIEF

1898 by Sir William Ramsay and Morris W. Travers, England.

DISCOVERY

Ancient Greek, ξένον (xénon), neuter of ξένος (xénos, 'foreign, strange').

ETYMOLOGY

Xenon

ELEMENT

Xe

SYMBOL

54

ATOMIC NUMBER

7440-63-3

CAS NUMBER

ELEMENTAL SPECTRUM

Colourless

ELEMENTAL COLOUR

1.000'702

REFRACTIVE INDEX

-

POISSON RATIO

22.253 cm³

MOLAR VOLUME

-

BRINELL HARDNESS

2.25

MOHS HARDNESS

1,090 m/s, Mach 3.177'8

VICKERS HARDNESS

-

SPEED OF SOUND

-

BULK MODULUS

-

SHEAR MODULUS

-

YOUNG MODULUS

ALLOTROPES

NONE

161.35 K, -111.80 °C

MELTING POINT

165.15 K, -108.00 °C

BOILING POINT

-

AUTOMATIC IGNITION

-

FLASHPOINT

289.77 K, 16.62 °C

CRITICAL TEMPERATURE

5.84M Pa, 58 Atm

CRITICAL PRESSURE

0.005'650 W/(m K)

THERMAL CONDUCTIVITY

158.32 J/(kg K)

THERMAL EXPANSION

2.300 kJ/mol

SPECIFIC HEAT

7.760 kJ/mol

HEAT FUSION

12.640 kJ/mol

HEAT VAPORISATION

-

HEAT COMBUSTION

-

CURIE POINT

-

NEEL POINT

-

ADIABATIC INDEX

Gas

PHASE

-

ELECTRICAL TYPE

-

CONDUCTIVITY

-

RESISTIVITY

-

SUPERCONDUCTING POINT

Diamagnetic

MAGNETIC TYPE

-0.000'000'004'3

MASS SUSCEPTIBILITY

-0.000'000'000'565'00

MOLAR SUSCEPTIBILITY

-0.000'000'025'40

VOLUME SUSCEPTIBILITY

Noble Gas

CLASSIFICATION

131.292'480'6

ATOMIC WEIGHT

108 pm

ATOMIC RADIUS

131 pm

COVALENT RADIUS SINGLE BOND

135 pm

COVALENT RADIUS DOUBLE BOND

122 pm

COVALENT RADIUS TRIPLE BOND

216 pm

VAN DER WAALS RADIUS

[Kr]5s²4d¹⁰5p⁶

ELECTRON CONFIGURATION

Cubic, Face-centred

CRYSTAL STRUCTURE

-

DENSITY AS SOLID

-

DENSITY AS LIQUID

5.900'00 g/cm³

DENSITY AS GAS

Fm_3m

SPACE GROUP NAME

225

SPACE GROUP NUMBER

π/2, π/2 π/2

LATTICE ANGLES

620.23, 620.23 620.23 pm

LATTICE CONSTANTS

6

VALENCE

2.6

ELECTRONEGATIVITY

-77.19 kJ/mol

ELECTRON AFFINITY

IONISATION ENERGY