CAS Number1333-74-0
PubChem CID783
Rază atomică53
Volum molar14,4
Masă atomică1,008
Punct de fierbere-252,87
Bulk Modulus
CategorieAlte nemetale
Structură cristalinăSistemul Hexagonal
Rază de covalență31
Electrical Resistivity
Configurație electronică1s1
Electroni pe nivelul de energie1
Energie de fuziune0,558
Energie de evaporare0,452
Potențial de ionizare13,598
Magnetic Ordering
Magnetic Susceptibility
Mass Number1
Punct de topire-259,14
Număr atomic1
Număr de oxidare-1, 1
Poisson Ratio
Shear Modulus
Căldură specifică14,304
Conductivitate termică0,002
Van der Waals radius
Young's Modulus
Abundență naturală
Abundența în scoarța Pământului0.15%
Abundența în Univers75%
H Hidrogen 1 1.00794 1 1 s 1 -259.1 -252.9 1s1 1 0.0000899 0.15% Colorless Hexagonal 2.2 2.300 {"1":"1312.0"} 1312 72.8 37 ±1 2.08 14.1 0.05868 0.4581 14.304 0.1815 0 Gas, Diamagnetic, Stable, Natural, Nonmetal HI-dreh-jen Tasteless, colorless, odorless gas. The most abundant element in the universe. Tenth most abundant element in the earth's crust. Most hydrogen is used in the production of ammonia. Also used in balloons and in metal refining. Also used as fuel in rockets. Its two heavier isotopes are: deuterium (D) and tritium (T) used respectively for nuclear fission and fusion. Commercial quantities are produced by reacting superheated steam with methane or carbon. In lab work from reaction of metals with acid solutions or electrolysis. 6rdmpx39PRk Hydrogen
Neon was discovered in 1898 by the British chemists Sir William Ramsay and Morris W. Travers in London.

It was discovered when Ramsay chilled a sample of air until it became a liquid, then warmed the liquid and captured the gases as they boiled off.

After 1902, Georges Claude's company, Air Liquide, was producing industrial quantities of neon as a byproduct of his air liquefaction business. Din cuvântul grecesc neos, nou 1 1766 Henry Cavendish London, England From the Greek words "hydro" and "genes" meaning "water" and "generator"

Isotopes of Neon

Standard Atomic Weight


Izotopi stabili

1H 2D

Izotopi instabili

3T 4H 5H 6H 7H

Neon is not known to be toxic
In a vacuum discharge tube, neon glows reddish orange
Neon is often used in brightly lit advertising signs.

It is also used in vacuum tubes, high-voltage indicators, lightning arrestors, wave meter tubes, television tubes, and helium-neon lasers.

Liquid neon is used as a cryogenic refrigerant.