Neon

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Image

Attribution: Alchemist-hp

Animated Neon

History

From the Greek word neos, new. Discovered by Ramsay and Travers in 1898. Neon is a rare gaseous element present in the atmosphere to the extent of 1 part in 65,000 of air. It is obtained by liquefaction of air and separated from the other gases by fractional distillation.

Compounds

Neon is a very inert element, however, it has been reported to form a compound with fluorine. It is still questionable if true compounds of neon exist, but evidence is mounting in favor of their existence. The ions, Ne+, (NeAr)+, (NeH)+, and (HeNe+) are known from optical and mass spectrometric studies. Neon also forms an unstable hydrate.

Uses

Although neon advertising signs account for the bulk of its use, neon also functions in high-voltage indicators, lightning arrestors, wave meter tubes, and TV tubes. Neon and helium are used in making gas lasers. Liquid neon is now commercially available and is finding important application as an economical cryogenic refrigerant.

Isotopes

Natural neon is a mixture of three isotopes. Six other unstable isotopes are known.

General Info

AtomicNumber
10
Symbol
Ne
Name
Neon

Atomic Info

Appearance
AtomicWeight
20.1797(6)
Color
B3E3F5
ElectronicConfiguration
[He] 2s2 2p6
ElectronegativityInPauling
AtomicRadiusInPM
69
IonRadiusInPM
VanDerWaalsRadiusInPM
154
IEinKJmol
2081
EAinKJmol
0
OxidationStates
StandardState
gas
BondingType
atomic
MeltingPoint
25
BoilingPoint
27
Density
0
State
Noble gas
DiscoveredYear
1898