Argono
18
Ar
Grupo
18
Perio
3
Bloko
p
Protonoj
Elektronoj
Neŭtronoj
18
18
22
Ĝeneralaj Propraĵoj
Atoma Nombro
18
Atommaso
39,948
Amasa Nombro
40
Kategorio
Noblaj gasoj
Koloro
Senkolora
Radioaktiva
Ne
De la Greka vorto argos, neaktiva
Kristala Strukturo
Vizaĝo Centrita Kubo
Historio
Argon was suspected to be present in air by Henry Cavendish in 1785.
It was not isolated until 1894 by Lord Rayleigh and Sir William Ramsay in Scotland.
Argon became the first member of the noble gases to be discovered.
In 1957, IUPAC agreed that the symbol should change from A to Ar.
It was not isolated until 1894 by Lord Rayleigh and Sir William Ramsay in Scotland.
Argon became the first member of the noble gases to be discovered.
In 1957, IUPAC agreed that the symbol should change from A to Ar.
Elektronoj per ŝelo
2, 8, 8
Elektrona Agordo
[Ne] 3s2 3p6
Argon makes a distinctive blue-green gas laser
Fizikaj Propraĵoj
Fazo
Gasa
Denso
0,0017837 g/cm3
Fandpunkto
83,8 K | -189,35 °C | -308,83 °F
Bolpunkto
87,3 K | -185,85 °C | -302,53 °F
Varmo de Fuzio
1,18 kJ/mol
Varmo de Vaporiĝo
6,5 kJ/mol
Specifa Varmo Kapacito
0,52 J/g·K
Krusta Abundo
0,00015%
Universa Abundo
0,02%
CAS Nombro
7440-37-1
PubChem Kunmetita Identiga Nombro
23968
Atomaj Propraĵoj
Atoma Radiuso
71 pm
Kovalenta Radiuso
106 pm
Elektronegativeco
-
Potencialo de jonigo
15,7596 eV
Atoma Volumo
22,4 cm3/mol
Termika Kondukto
0,0001772 W/cm·K
Oksidaj Ŝtatoj
0
Aplikoj
Argon gas is used to fill conventional incandescent and fluorescent light bulbs.
Argon is also used as an inert gas shield for arc welding and cutting, as blanket for the production of titanium and other reactive elements.
It is used as a protective atmosphere for growing silicon and germanium crystals.
Argon is also used as an inert gas shield for arc welding and cutting, as blanket for the production of titanium and other reactive elements.
It is used as a protective atmosphere for growing silicon and germanium crystals.
Argon is considered to be non-toxic
Izotopoj
Stabilaj Izotopoj
36Ar, 38Ar, 40ArMalstabilaj Isotopoj
30Ar, 31Ar, 32Ar, 33Ar, 34Ar, 35Ar, 37Ar, 39Ar, 41Ar, 42Ar, 43Ar, 44Ar, 45Ar, 46Ar, 47Ar, 48Ar, 49Ar, 50Ar, 51Ar, 52Ar, 53Ar