NEON, Ne (10)

Neon is a colourless, odourless, inert monatomic gas under standard conditions, with approximately two-thirds the density of air.

ELEMENT BRIEF

1898 by Sir William Ramsay and Morris Travers of London, England.

DISCOVERY

Ancient Greek, νέον (néon), neuter of νέος (néos, 'new').

ETYMOLOGY

Neon

ELEMENT

Ne

SYMBOL

10

ATOMIC NUMBER

7440-01-9

CAS NUMBER

ELEMENTAL SPECTRUM

Colourless

ELEMENTAL COLOUR

1.000'067

REFRACTIVE INDEX

-

POISSON RATIO

22.422 cm³

MOLAR VOLUME

-

BRINELL HARDNESS

-

MOHS HARDNESS

-

VICKERS HARDNESS

936 m/s, Mach 2.728'9

SPEED OF SOUND

-

BULK MODULUS

-

SHEAR MODULUS

-

YOUNG MODULUS

ALLOTROPES

NONE

24.56 K, -248.59 °C

MELTING POINT

27.07 K, -246.08 °C

BOILING POINT

-

AUTOMATIC IGNITION

-

FLASHPOINT

44.40 K, -228.75 °C

CRITICAL TEMPERATURE

2.76M Pa, 27 Atm

CRITICAL PRESSURE

0.049'100 W/(m K)

THERMAL CONDUCTIVITY

-

THERMAL EXPANSION

1,030 J/(kg K)

SPECIFIC HEAT

0.34 kJ/mol

HEAT FUSION

1.75 kJ/mol

HEAT VAPORISATION

-

HEAT COMBUSTION

-

CURIE POINT

-

NEEL POINT

5/3

ADIABATIC INDEX

Gas

PHASE

-

ELECTRICAL TYPE

-

CONDUCTIVITY

-

RESISTIVITY

-

SUPERCONDUCTING POINT

Diamagnetic

MAGNETIC TYPE

-0.000'000'004'1

MASS SUSCEPTIBILITY

-0.000'000'000'082'70

MOLAR SUSCEPTIBILITY

-0.000'000'003'69

VOLUME SUSCEPTIBILITY

Noble Gas

CLASSIFICATION

20.180'046'4

ATOMIC WEIGHT

38 pm

ATOMIC RADIUS

67 pm

COVALENT RADIUS SINGLE BOND

96 pm

COVALENT RADIUS DOUBLE BOND

-

COVALENT RADIUS TRIPLE BOND

154 pm

VAN DER WAALS RADIUS

[He]2s²2p⁶

ELECTRON CONFIGURATION

Cubic, Face-centred

CRYSTAL STRUCTURE

-

DENSITY AS SOLID

-

DENSITY AS LIQUID

0.900'00 g/cm³

DENSITY AS GAS

Fm_3m

SPACE GROUP NAME

225

SPACE GROUP NUMBER

π/2, π/2 π/2

LATTICE ANGLES

442.9, 442.9 442.9 pm

LATTICE CONSTANTS

0

VALENCE

-

ELECTRONEGATIVITY

-115.79 kJ/mol

ELECTRON AFFINITY

IONISATION ENERGY