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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 |
 Portuguese | árgon |
 Spanish | argón |
 Swedish | argon |
| Peter van der Krogt's Element Multidict - element name translations in over 48 langauges |
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Page compiled: Wed Sep 05 18:37:53 GMT+01:00 2001
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