| Argon | |
| Electrons per shell | 2,8,8 |
| Electron Configuration | [Ne] 3s2 3p6 ![]() |
| Ground state | 1S0 |
| Atomic Volume | 28.5 cm3 mol-1 |
| Electronegativity | No data. |
| Magnetic ordering | No data |
| Mass magnetic susceptibility | -6 x 10-9 |
| Molar magnetic susceptibility | -2.4 x 10-10 |
| Speed of sound | 323 m s-1 |
Thermal Properties |
|
| Enthalpy of Atomization | No data. |
| Enthalpy of Fusion | 1.21 kJ mol-1 |
| Enthalpy of Vaporisation | 6.53 kJ mol-1 |
| Heat Capacity | 20.786 J mol-1 K-1 |
| Thermal Conductivity | 17.72 W m-1 K-1 |
| Thermal Expansion | No data. |
| Critcal Temperature | 150.8 K (-122.2°C) |
| Critcal Pressure | No data. |
| Adiabatic index | No data. |
Electrical Properties |
|
| Electrical resistivity | No data. |
| Electrical conductivity | ? 106/cm Ω |
Chemical Properties |
|
| Ionization Potential | |
| 15.759 | |
| 27.629 | |
| 40.74 | |
Optical Properties |
|
| Refractive Index (gas) | 1.000281 |
Energy Levels |
|
| 2.9577 KeV | |
| 2.95563 KeV | |
| 3.1905 KeV | |
| 0.2205 KeV | |
| 0.218 KeV | |
| 0.2205 KeV | |
Atomic Radii |
|
| 71 pm | |
| 71 pm | |
| 97 pm | |
| 188 pm | |
| 96 pm | |
| No data. | |
Oxidation States |
|
| Ar0 | |
Ionisation Energies (kJ mol-1) ![]() |
|
| 1520.4 | |
| 2665.2 | |
| 3928 | |
| 5770 | |
| 7238 | |
| 8811 | |
| 12021 | |
| 13844 | |
| 40759 | |
| 46186 | |
Vapour Pressure |
||||||
| P (Pa) | 1 | 10 | 100 | 1K | 10K | 100K |
| T (K) | 47 | 53 | 61 | 71 | 87 | |
Crystal Structure |
|
| Cubic Close packed | |
![]() |
a = 525.6 pm |
| b = 525.6 pm | |
| c = 525.6 pm | |
| α = 90° | |
| β = 90° | |
| γ = 90° | |