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Neon

Non-Metalgaseous
Symbol: Ne
Atomic number: 10
Atomic mass: 20.1797
Group: Noble Gas
CAS-number: 7440-01-9

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Physical data
Isotopes
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Physical data

Electronic dataThermal dataSteric data
Shells: 2, 8
Orbitals: [He] 2s2 2p6
Electronegativity: --, 4.84
1. Ionization potential: 21.5645 eV
2. Ionization potential: 40.962 eV
3. Ionization potential: 63.45 eV
Oxidation states: 0
Electrical conductivity: --
Melting point: -248.67 °C
Boiling point: -246.048 °C
Specific heat: 0.904 J/gK
Heat of fusion: 0.3317 kJ/mol
Heat of vaporization: 1.7326 kJ/mol
Thermal conductivity: 0.000493 W/cmK
Atomic radius: 0.51 Å
Ionic radius: -- Å
Covalent radius: 0.71 Å
Atomic volume: 17.3 cm³/mol
Density (293 K): 0.0008999 g/cm³
Crystal structure: cubic face centered
cubic face centered

Isotopes

NuclideAbundance [%]MassSpinHalflifeDecay modeDecay tree
20Ne 90.92 19.9924 0 -- --
21Ne 0.257 20.9938 3/2 -- --
22Ne 8.82 21.9914 0 -- --

Other info

Name origin:Greek: neos (new)
Description:Colorless, odorless, tasteless inert gas. Fourth most abundant element in the universe and fifth most abundant in the earth's atmosphere (18.18 ppm).
Discovered by:Sir William Ramsey, M. W. Travers
Year:1898
Place:England
Sources:Obtained from production of liquid air as a byproduct of producing liquid oxygen and nitrogen.
Use(s):Primarily for lighting.