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Neon General

Name:Neon Symbol:Ne
Type: Noble Gas Atomic weight:20.179
Density @ 293 K:0.0009 g/cm3 Atomic volume:16.7 cm3/mol

Neon was discovered in 1898 by William Ramsay and Morris Travers during experiments with liquid air. The name comes from the Greek word 'neon', meaning new.

Neon States

State (s, l, g):gas
Melting point:24.53 K (-248.57 °C) Boiling point:27.1 K (-246.0 °C)

Neon Energies

Specific heat capacity:0.904 J g-1 K-1 Heat of atomization:0 kJ mol-1
Heat of fusion:0.3317 kJ mol-1 Heat of vaporization :1.7326 kJ mol-1
1st ionization energy:2080.6 kJ mol-1 2nd ionization energy: 3952.2 kJ mol-1
3rd ionization energy:6121.9 kJ mol-1 Electron affinity:kJ mol-1

Neon Oxidation & Electrons

Shells:2,8 Electron configuration:[He] 2s2 2p6
Minimum oxidation number: 0 Maximum oxidation number: 0
Min. common oxidation no.: 0 Max. common oxidation no.: 0
Electronegativity (Pauling Scale): Polarizability volume:0.396 Å3

Neon Appearance & Characteristics

Structure:fcc: face-centered cubic Color:Colorless
Hardness: mohs
Harmful effects:

Neon is not known to be toxic.


Colorless under normal conditions, its glows a reddish-orange in a vacuum discharge tube.

Neon forms no known stable compounds.

It has the smallest liquid range of any element (2.6 °C).


When a few thousand volts is applied to neon, it emits an orange/red light. It is therefore often used in brightly lit advertising signs.

Neon is also used in high-voltage warning indicators, in Geiger counters and in television tubes.

Liquid neon is used as a cryogenic refrigerant.

Neon Reactions

Reaction with air: none Reaction with 6 M HCl: none
Reaction with 15 M HNO3: none Reaction with 6 M NaOH: none

Neon Compounds

Oxide(s): none Chloride(s): none
Hydride(s): none

Neon Radius

Atomic radius:38 pm Ionic radius (1+ ion):pm
Ionic radius (2+ ion):pm Ionic radius (3+ ion):pm
Ionic radius (2- ion):pm Ionic radius (1- ion):pm

Neon Conductivity

Thermal conductivity:0.05 W m-1 K-1 Electrical conductivity: S cm-1

Neon Abundance & Isotopes

Abundance earth's crust:5 parts per billion by weight, 5 parts per billion by moles
Abundance solar system:1,000 ppm by weight, 70 ppm by moles
Cost, pure:$33 per 100g
Cost, bulk:$ per 100g

Neon is obtained commercially by fractional distillation of liquid air.


Neon has 14 isotopes whose half-lives are known, with mass numbers 16 to 29. Of these, three are stable: 20Ne, 21Ne and 22Ne.

Neon Other



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