Elektronische Daten		Thermische Daten		Sterische Daten
Schalen: 2,8,8 Orbitale: [Ne] 3s2 3p6 Elektronegativität: 3.2, -- 1. Ionization potential: 15.7596 eV 2. Ionization potential: 27.629 eV 3. Ionization potential: 40.74 eV Oxidation states: 0 Electrical conductivity: --		Melting point: -189.2 °C Boiling point: -185.7 °C Specific heat: 0.520 J/gK Heat of fusion: 1.188 kJ/mol Heat of vaporization: 6.447 kJ/mol Thermal conductivity: 0.0001772 W/cmK		Atomic radius: 0.88 Å Ionic radius: -- Å () Covalent radius: 0.98 Å Atomic volume: 23.9 cm³/mol Density (293 K): 0.0017824 g/cm³ Crystal structure: Kubisch flächenzentriert

Nuklid	Häufigkeit [%]	Masse	Spin	Halbwertszeit	Zerfallsmodus	Zerfallsreihe
36Ar	0.337	34.9675	0	--	stabil	--
37Ar	0	36.9667	3/2	35.0d	EC	View
38Ar	0.063	37.9627	0	--	stabil	--
39Ar	0	38.964	7/2	269y	-	View
40Ar	99.6	39.9624	0	--	stabil	--
41Ar	0	41	7/2	1.82h	-	View

Legende

Herkunft des Namen:	griechisch: argos (inaktiv)
Beschreibung:	Colorless, odorless, tasteless noble gas. It is the third most abundant element in the earth's atmosphere and makes up about 1%.
Entdeckt von:	Sir William Ramsey, Baron Rayleigh
Jahr:	1894
Ort:	Schottland
Quelle(n):	Continuously released into the air by decay of radioactive potassium-40. Pure form is obtained from fractional distillation of liquid air.
Verwendung(en):	Used in lighting products. It is often used in filling incandescent light bulbs. Some is mixed with krypton in fluorescent lamps. Crystals in the semiconductor industry are grown in argon atmospheres.