Neon

Non-Metal

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

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Electronic 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: --

Thermal data

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

Steric data

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

Nuclide	Abundance [%]	Mass	Spin	Halflife	Decay mode
²⁰Ne	90.92	19.9924	0	--	--
²¹Ne	0.257	20.9938	3/2	--	--
²²Ne	8.82	21.9914	0	--	--

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.

Neon

Physical data

Electronic data

Thermal data

Steric data

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