Argon
Chemical, physical and material properties and data of the chemical element Argon.
Contents
General Information about Argon
Regular nameArgonChemical symbolArOther namesHistorical namesName meaning, originDiscovery (year)OccurencePosition in the PSEGroup membership
Atomar Properties of Argon
Electron configuration of Argon
| 1s | 2s | 2p | 3s | 3p | 3d | 4s | 4p | 4d | 4f | 5s | 5p | 5d | 5f | 6s | 6p | 6d | 6f | 7s | 7p |
|---|
| 2 | 2 | 6 | 2 | 6 | | | | | | | | | | | | | | | |
Shorthand electron configuration of Argon: [Ne] 3s2 3p6 .
Ionization Energies of Argon
The following table lists the ionization energies IE (ionization potentials); the IE is the energy required in electron volt (eV) per atom to separate a given electron from an Argon atom.
| IE1 | IE2 | IE3 | IE4 | IE5 | IE6 | IE7 | IE8 |
|---|
| 15.759610 | 27.62966 | 40.74 | 59.81 | 75.02 | 91.009 | 124.323 | 143.46 |
Isotopic Data of Argon
An overview of the nuclides as well as the isotopic data and properties are listed on the following page: Argon isotopes.
Chemistry of Argon
Material and Physical Properties
Melting point- 189.34 °CEnthalpy of fusion (molar)1.18 kJ mol-1Boiling point- 185.848 °CEnthalpy of vaporization6.53 kJ mol-1Density1.784 g L -1 (0°C; 101.325 kPa)
External Data, Identifiers
CAS registry number7440-37-1InChI =1S/ArInChIKeyXKRFYHLGVUSROY-UHFFFAOYSA-NPubChem ID23968
Last update: 2022-12-12
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