Science
Periodic Table - Elements - Argon

Symbol Ar
Atomic Number 18
Relative Atomic Mass
12C = 12.0000
39.948
Atomic Radius
pm
174
First Ionisation Energy
kJ mol-1
1520.4
Electronegativity n/a
Density
kg m-3
1656 [40 K]
1380 [b.p.]
1.784 [273 K]
Molar Volume
cm3
24.12 [40K]
Thermal Conductivity
W m-1 K-1
0.0177 [300 K]
Melting Point
K
83.78
Boiling Point
K
87.29
Number of Isotopes 15
Ground State Electron
Configuration
[Ne]3s23p6 = [Ar]
Term Symbol 1S0
Discovery Discovered by Lord Rayleigh (London, England) and Sir W. Ramsey (Bristol, England) in 1894
Name Derived From Greek argos meaning 'inactive'
Name in Other
Languages
 Croatian Argon
 Danish argon
 Dutch argon
 Finnish argon
 French argon
 German Argon
 Italian argo
 Norwegian argon
 Portugueseárgon
 Spanish argón
 Swedish argon
Peter van der Krogt's Element Multidict - element name translations in over 48 langauges


Page compiled: Wed Sep 05 18:37:53 GMT+01:00 2001