 | Argon | Atomic Number: 18 |
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- Overview
Property Value Units 39.948
1.784
- Thermal Properties
Thermal Properties
Property Value Units -189°C
-186°C
4.898 MPa
150.87°C
1.18 kJ/mol
6.5 kJ/mol
520.33 J/kg·K
0.01772 W/m·K
- Electon Configuration
[Ne] 3s2 3p6
K L M N O P Q 2 8 8 0 0 0 0 Level S Orbital P Orbital D Orbital F Orbital Level 1 Level 2 - History
Year Discovered
1894
- Isotopes
Isotope Common Name Symbol Mass Status Abundance Half-life Decay mode Decay Energy Nuclear Spin Magnetic Moment 18
Ar
36
Argon Ar 36 Stable 0.3365 - - - - - 18
Ar
38
Argon Ar 38 Stable 0.0632 - - - - - 18
Ar
40
Argon Ar 40 Stable 99.6003 - - - - - Isotopic mass data for stable isotopes is from:
G. Audi, A.H. Wapstra in Nuclear Physics A, 1993, 565, 1-65
and
G. Audi, A.H.Wapstra in Nuclear Physics A, 1995, 595 409-480.Natural abundance data is from:
K.J.R. Rosman, P.D.P. Taylor in Pure Appplied Chemistry, 1999, 71, 1593-1607.- Occurance
In the Universe 0.02% In the Sun 0.007% In Meteorites 0% In the Earth's Crust 0.00015% In Seawater 0.000045% In the Human Body 0% - Models
Pictures, videos and 3D models of the element
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